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Fishy Aleks Sweater Pattern

Fishy Aleks Sweater Pattern
4.6★ Rating
12-15 Hours Time Needed
3.7K Made This
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Intermediate Level

Ideal for those with basic crochet experience, featuring slightly more advanced stitches and techniques to expand your skills.

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Multi-Day Project

A rewarding 12+ hour journey—perfect for dedicated crafters who love detailed work.

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Casual Chic

Relaxed style with a modern twist, perfect for everyday wear while maintaining that handcrafted uniqueness.

About This Fishy Aleks Sweater Pattern

This pattern creates a relaxed, cropped-to-regular-length sweater with a large fish graphic on the front panel. It is worked in half double crochet (HDC) in two main rectangular panels plus sleeves, collar, and ribbing. The pattern includes two sizes of fish graphs to fit multiple sizes and recommendations for centering and placement.

Fishy Aleks Sweater Pattern crochet pattern - detailed view of completed project

You will make front and back panels, join the shoulders, add sleeves, then finish with a collar and ribbing. The fish motif is worked with intarsia or carried yarn techniques using small scrap skeins.

Why You'll Love This Fishy Aleks Sweater Pattern

I absolutely love this pattern because it pairs simple HDC construction with a playful graphic, giving a striking finished sweater without overly complex shaping. I enjoy how the intarsia fish lets you use scraps and add personality with color choices. The pattern is flexible — I like that you can size it up or down easily and change the fish graph to make each sweater unique. Making one of these feels rewarding: chunky, cozy, and full of handmade charm.

Fishy Aleks Sweater Pattern step 1 - construction progress Fishy Aleks Sweater Pattern step 2 - assembly progress Fishy Aleks Sweater Pattern step 3 - details and accessories Fishy Aleks Sweater Pattern step 4 - final assembly and finishing

Switch Things Up

I love how easy it is to customize the Fishy Aleks sweater with color; try swapping the base color for a neutral beige or a bold jewel tone to change the whole vibe.

If you want a chunkier sweater, I often use a bulkier aran or hold two strands together and increase hook size for a more oversized, cozy result.

To make a lighter, summer-friendly version, choose a sport or DK weight yarn and a smaller hook — remember this will change the fish graph placement so recalculate side stitches accordingly.

I sometimes replace the fish graph with a different simple motif or initials for a personalized touch; you can graph any pixel art using the same centering method described in the pattern.

Prefer the carried yarn look? Carry your non-working colors across short distances and use intarsia for larger color islands to keep the back tidy and avoid long floats.

I also like to experiment with adding a small pocket or a badge near the hem; just crochet a small rectangle in HDC and sew it on for a practical and decorative element.

For a cropped version, simply reduce the number of repeating R2 rows on the front and back panels and finish with a taller ribbing — check fit as you go to avoid cutting length too short.

Want a vintage look? Try heathered or marled yarns for the base and single-color fish details for contrast — the double-threaded yarn method in the pattern gives a lovely variegated effect.

If you prefer a closer fit on the sleeves, decrease the number of HDC rounds when you form the sleeve tube, or work fewer rows before adding the cuff to make them snugger at the wrist.

I often make a matching mini for a child by recalculating the foundation chain, using the smaller fish graph, and adjusting yardage — it makes a delightful parent-child set!

Common Mistakes & How to Fix Them

✗ Failing to swatch for gauge; make a 10x10cm HDC swatch to check tension and adjust hook size if needed. ✗ Not centering the fish graph correctly; always subtract the graph width from your stitch count and divide by two to find side placement. ✗ Carrying yarn too tightly when using intarsia or carrying yarn; keep floats loose to avoid puckering and maintain even tension. ✗ Skipping stitch markers for neckline shaping and shoulder extensions; place markers to mark shaping points to avoid uneven shoulders. ✗ Not trying the panels on as you go; periodically checking fit prevents making the front/back too long or wide for your body.

Fishy Aleks Sweater Pattern

Make a cozy, graphic sweater featuring a bold fish intarsia motif — perfect for crocheters who love wearable statement pieces. This pattern walks you through panel construction, graph placement, and finishing details so you can create a tailored fit. You'll use HDC stitchwork and optional double-threaded yarn to get a chunky textured finish.

Intermediate 12-15 Hours

Materials Needed for Fishy Aleks Sweater Pattern

— Main Fabric

  • 01
    Aran weight yarn (US terms) for the base color — Adlibris Socki Plus (100g = 156m) used for the sample base
  • 02
    Double-pulled DK weight scrap yarn for the fish motif (use small skeins, approximately 10-20g per color)
  • 03
    Total yarn (base + fish) approximate by size: XS 400g / 624m
  • 04
    Total yarn (base + fish) approximate by size: S 450g / 702m
  • 05
    Total yarn (base + fish) approximate by size: M 600g / 936m
  • 06
    Total yarn (base + fish) approximate by size: L 918g / 1432m
  • 07
    Total yarn (base + fish) approximate by size: XL 1000g / 1650m
  • 08
    Total yarn (base + fish) approximate by size: 2XL 1035g / 1750m
  • 09
    Total yarn (base + fish) approximate by size: 3XL 1200g / 1980m
  • 10
    Total yarn (base + fish) approximate by size: 4XL 1400g / 2310m
  • 11
    Total yarn (base + fish) approximate by size: 5XL 1750g / 2890m

— Tools Required

  • 01
    Crochet hook size 5.0mm
  • 02
    Scissors
  • 03
    Stitch markers / bobby pins
  • 04
    Yarn needle for sewing and weaving ends
  • 05
    Measuring tape
  • 06
    Pins for assembly (optional)
  • 07
    Small spare skeins of DK weight yarn for intarsia (10-20g per color)

Progress Tracker

0% Complete

— Front Panel :

Foundation row :

CH (55, 61, 68, 76, 82, 88, 97, 103, 109).

R1 :

HDC in the third CH from your hook. HDC until the end of the row for a total of (53, 59, 66, 74, 80, 86, 95, 101, 107) STS. CH 2 and TO.

R2 :

HDC in each ST until the end of the row. CH2 and TO.

Info :

For sizes XS-S: Repeat R2 20 times, for a total of 22 rows. For sizes M-L: Repeat R2 24 times, for a total of 26 rows. For sizes XL-2XL: Repeat R2 30 times, for a total of 32 rows. For sizes 3XL-4XL: Repeat R2 36 times, for a total of 38 rows. For size 5XL: Repeat R2 42 times, for a total of 44 rows. If you want a longer/shorter sweater, you may add/detract rows. Just make sure you finish on an even row, meaning the tail from your foundation row is facing left after you CH2 and TO at the end of your last row.

Info :

Now we start the fish graph! There are two different sizes of the graph — one bigger and one smaller. My recommendation is that sizes XS–M use the smaller graph and that L and upwards go with the bigger graph. This ensures padding on the sides so the fish will be visible even when the panels wrap around your side.

Info :

The bigger fish measures 34cm in width and 18cm in height. The smaller fish measures 28cm in width and 16cm in height.

Info :

It is important that you start the fish on an odd row: XS/S: 23, M/L: 27, XL/2XL: 33, 3XL-4XL: 39, 5XL: 45.

— Smaller Fish Graph: XS, S, M :

Info :

The smaller fish is 39 STS wide and 16 R tall. To center your placement, detract 39 from your number of STS and divide that number by 2. The final number is the number of STS from each side (left and right) you should have before referring to the graph.

Info :

For example, size XS is 53 STS wide. 53 - 39 = 14. 14/2 = 7. There should be 7 STS of your background color on each side of the graph.

Instruction :

On an odd row (23, 23, 27), with your foundation chain tail facing left: HDC (7, 10, 13). Enter graph, starting at bottom right.

Instruction :

After the 39th HDC of each row, HDC (7, 10, 13), until end of the row. Repeat for 16 rows, until the end of the graph.

Instruction :

Exit graph and HDC in each STS for 14 rows, for a total of (52, 52, 56) rows.

Info :

** Please note: if you get a fraction when you calculate your placement and divide your STS count in two, e.g. 54-39 = 15 and 15/2 = 7.5, then HDC 7, enter graph, then HDC 8 after you exit the graph. **

— Bigger Fish Graph: L and up :

Info :

The bigger fish is 47 STS wide and 21 R tall. To center your placement, detract 47 from your number of STS and divide that number by 2. The final number is the number of STS from each side (left and right) you should have before referring to the graph.

Info :

For example, size L is 74 STS wide. In this example, we get an odd number when 74 - 47 = 27. 27/2 = 13.5. To solve this, we make 13 STS on one side and 14 STS on the other.

Instruction :

On an odd row (27, 33, 33, 39, 39, 45), with your foundation chain tail facing left: HDC (13, 16, 19, 24, 27, 30). Enter graph, starting at bottom right.

Instruction :

After the 47th HDC of each row, HDC (14, 17, 20, 24, 27, 30), until end of the row. Repeat for 21 rows until the end of the graph.

Info :

Continued on next page...

Instruction :

Exit graph and HDC in each STS for 9 rows, for a total of (56, 62, 62, 68, 68, 74) rows.

Info :

** Please note: if you get a fraction when you calculate your fish placement and divide your STS count in two, e.g. 66-39 = 27 and then 27/2 = 13.5, then HDC 13, enter graph, then HDC 14 after you exit the graph. Since the fish is not a symmetrical shape, one stitch difference from the center won't be visible. **

— Neckline Shaping – Front :

Instruction :

At row (53, 53, 57, 57, 63, 63, 69, 69, 75) we will start the neckline shaping/shoulder extensions. The shoulder extensions are worked separately, meaning you do the left and right side one at a time.

Step 1 :

HDC (19, 22, 25, 29, 32, 35, 40, 43, 46). CH2 and TO.

Step 2 :

HDC2TOG. HDC until the end of the row. CH2 and TO.

Instruction :

Repeat step 1 and 2 for 8 rows, alternating between decreases. At the end of row 8, fasten off.

Instruction :

To make the other side, count STS from the edge and add a stitch marker in the (19, 22, 25, 29, 32, 35, 40, 43, 46)th ST.

Instruction :

Attach your yarn by your stitch marker. 1. HDC until the end of the row (19, 22, 25, 29, 32, 35, 40, 43, 46). CH2 and TO. 2. HDC until there are two STS left on the row. HDC2TOG. CH2 and TO.

Instruction :

Repeat step 1 and 2 for 8 rows, alternating between decreases. At the end of row 8, fasten off. See next page for diagram.

Info :

You should have a total of (60, 60, 64, 64, 72, 72, 78, 78, 84) rows.

— Back Panel :

Info :

The back panel is the same as the front, minus the fish graph. You may add whatever text or graph you want here, or just keep it simple.

Foundation row :

CH (55, 61, 68, 76, 82, 88, 97, 103, 109).

R1 :

HDC in the third CH from your hook. HDC until the end of the row for a total of (53, 59, 66, 74, 80, 86, 95, 101, 107) STS. CH 2 and TO.

R2 :

HDC in each ST until the end of the row. CH2 and TO.

Info :

For sizes XS-S: Repeat R2 54 times, for a total of 56 rows. For size M-L: Repeat R2 58 times, for a total of 60 rows. For sizes XL-2XL: Repeat R2 66 times, for a total of 68 rows. For sizes 3XL-4XL: Repeat R2 72 times, for a total of 74 rows. For size 5XL: Repeat R2 78 times, for a total of 80 rows.

Info :

... or repeat for however many rows you made your front panel, minus four (for the back panel's shoulder extensions).

— Neckline Shaping – Back :

Instruction :

At row (57, 57, 61, 61, 69, 69, 75, 75, 81) we will start the neckline shaping/shoulder extensions for the back panel.

Info :

The shoulder extensions are worked separately, meaning you do the left and right side one at a time. The process is the same as it is for the front, but you do 4 rows of decreases instead of 8.

Step 1 :

HDC (17, 20, 23, 27, 30, 33, 38, 41, 44). CH2 and TO.

Step 2 :

HDC2TOG. HDC until the end of the row. CH2 and TO.

Instruction :

Repeat step 1 and 2 for 4 rows, alternating between decreases. At the end of row four, fasten off. Continued on next page.

Instruction :

To make the other side, count STS from the edge and add a stitch marker in the (17, 20, 23, 27, 30, 33, 38, 41, 44)th ST.

Bullets :

HDC until the end of the row. CH2 and TO. HDC until there are two STS left on the row. HDC2TOG. CH2 and TO.

Instruction :

Repeat step 1 and 2 for 4 rows, alternating between decreases. At the end of row four, fasten off.

Info :

You should have a total of (60, 60, 64, 64, 72, 72, 78, 78, 84) rows.

— Joining the Panels :

Info :

When you've finished your two panels, it's time to seam them together at the shoulders. You may either SL ST them together or sew them together, whatever you prefer.

— Collar :

Instruction :

After you've joined the panels, let's make the collar! Start by attaching your yarn anywhere on your neckline. CH 1 and SC around. Make two rows of SC and SL ST to your starting point. From here:

Foundation row :

CH 6 ST or however tall you want your collar to be.

Step 1 :

Starting from the 2nd CH from hook, SC in the BLO until the end of the row (5). SL ST in the next two STS. TO.

Step 2 :

SC in the BLO until the end of the row (5). CH1 and TO.

Step 3 :

SC in the BLO until the end of the row (5). SL ST in the next two STS. TO.

Instruction :

Repeat step 2 and 3 until your collar reaches around. Make sure you can fit your head through!

— Sleeves :

Instruction :

SL ST the two panels together going from the bottom up. You may modify how loose/tight you want the sleeve to be on your arm pit. When you feel satisfied, SC around the hole, slip stitching into the first st. This will be your base.

Row 1 :

HDC in each ST. SL ST into the first ST. TO.

Instruction :

Repeat row 1 until you reach the length you wish. Repeat for the other side.

— Ribbing and Arm Cuffs :

Info :

I'm one of those people who always end with the ribbing. If you are familiar with making ribbed sweaters, shirts, or other clothing, feel free to start with the ribbing. I like to end with the ribbing because that way if the sweater feels too wide, I can use the ribbing to cinch it in.

How to make the ribbing :

1. CH to the desired height of ribbing + 1 (I wanted my ribbing to be 6 STS tall, so I started by chaining 7). 2. HDC in each CH (6). 3. HDC in the BLO of each ST. 4. Repeat until ribbing reaches around both panels.

Instruction :

When you have your ribbing, attach it to the bottom of the sweater by SL ST or by sewing. I prefer sewing, as it leaves a flatter finish, but you may choose whatever you please.

For the cuffs :

CH to the desired width of your cuff + 1. 1. HDC in each CH. 2. HDC in the BLO of each ST. 3. Repeat until cuff reaches around wrist.

Instruction :

When you have your cuffs, attach them to the bottom of the sleeve by SL ST or by sewing. I prefer sewing, as it leaves a flatter finish, but you may choose whatever you please.

— ...and you're done! :

Info :

Now just weave in all those loose ends and you're all done!!!

Assembly Instructions

  • Seam the shoulder extensions by aligning the front and back panel shoulder sections and either slip stitch or sew them together neatly at the marked shoulder stitches.
  • Attach the collar by working CH 1 and SC around the neckline, then build the collar rows and sew or slip stitch the collar edges to join the round.
  • Seam the panels along the sides to create the armholes, then SL ST or sew the sleeve base into the opening, working HDC in rounds to the desired sleeve length.
  • Make ribbing for the bottom of the sweater and for the cuffs, then sew the ribbing to the bottom edge of the panels and the cuffs to the sleeve ends for a clean finish.

Important Notes

  • 💡Work a gauge swatch (10x10cm = 14 sts x 12 rows in HDC) before starting; adjust hook size if your tension differs.
  • 💡Try the panels on as you go, especially when working length and sleeve fit, to avoid unnecessary frogging later.
  • 💡When working the fish graph, start on an odd row as specified for your size so the motif aligns correctly.
  • 💡Use intarsia for a cleaner finish or carry yarn carefully to avoid long floats showing through the fabric.
  • 💡Sew ribbing on for a flatter finish; slip stitching will work but can create a slightly bulkier join.

This Fishy Aleks sweater pattern is a playful, wearable project that merges simple construction with a bold intarsia motif. It uses HDC throughout for a cozy, textured fabric and allows you to use scrap yarn for the fish — a great stash-busting project. Make one for yourself or as a thoughtful handmade gift that shows off your colorwork and creativity. 🧶🐟

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FAQs

What size will the finished sweater be?

Finished measurements vary by chosen size; refer to the sizing table for width (A x2) and length (B) per size. The pattern lists XS through 5XL measurements in the Sizing and Measurements section.

Can I use different yarn weights for this pattern?

You can use different yarn weights but the gauge will change and the fish graph sizing may not match. If you use a thinner yarn, size up with more sts or switch to a larger hook to maintain approximate dimensions.

Do I need experience with intarsia or carrying yarn?

Basic intarsia or carrying yarn experience is recommended, as the fish motif is worked using either intarsia (recommended for clean color blocks) or carrying techniques. The pattern includes guidance on both approaches.

How long does this project typically take to complete?

This is a multi-day project; expect roughly 12-15 hours depending on size, experience, and how much time you spend on the graphing and finishing details.