Plush Bass Crochet Pattern: Make a Realistic Largemouth Bass

There’s something deeply satisfying about making a toy that looks like it came straight out of a tackle box. If you’ve ever wanted to combine a love of fishing with a love of crochet, this plush largemouth bass pattern is exactly the project you’ve been waiting for. Whether you’re making it for a fishing enthusiast in your life, a nursery decoration, a kids’ room trophy, or just for the joy of crafting something that looks genuinely lifelike, this pattern walks you through everything you need to know — from yarn selection to finishing details that give your bass that realistic, eye-catching look.

This is an intermediate-level pattern that uses basic to mid-level crochet techniques. If you can work in the round, increase and decrease stitches, and sew pieces together neatly, you have everything you need to make this project a success. The result is a plush largemouth bass that’s roughly 12–14 inches long, stuffed firmly, with detailed fins, a wide gaping mouth, and color gradients that mimic the real fish’s signature markings.

Let’s get started.

What You’ll Need

Before you pick up your hook, gather all your materials. Having everything on hand before you begin saves a lot of frustration mid-project.

Yarn: You’ll want worsted weight yarn (size 4) in the following colors: medium green (for the back and top of the body), light green or olive (for the sides), cream or off-white (for the belly), black (for the lateral line detail and pupils), and a small amount of dark gray or charcoal (for shading the fins). Some crafters like to use a touch of yellow-green for the gill area, which adds a nice dimension to the finished fish.

Hook: A 4.0mm or 4.5mm crochet hook works well with worsted weight yarn. Go down a size if you find your stitches are too loose and stuffing shows through.

Other supplies: Polyester fiberfill stuffing, two 15mm or 18mm safety eyes (amber or yellow-green look especially realistic), a tapestry needle for seaming and weaving in ends, stitch markers, and scissors. Optional but recommended: wire armature or craft wire for the fins if you want them to hold their shape, and fabric stiffener spray for a more rigid fin finish.

Understanding the Largemouth Bass Anatomy

Before you begin crocheting, it helps to look at a few reference photos of an actual largemouth bass. What makes this fish so recognizable? A few key features stand out.

The largemouth bass has a long, slightly compressed body that’s widest just behind the gill plate and tapers toward both the mouth and the tail. The back is a deep olive-green, which transitions through a mottled medium green along the sides. Running horizontally from gill to tail is a distinctive dark lateral stripe — one of the most iconic markings of this species. The belly is creamy white or pale yellow. The mouth is disproportionately large (hence the name), wide-gaping, and often described as extending past the eye.

The fins include the dorsal fin running along the back (split into a spiny forward section and a soft rear section), two pectoral fins on the sides, pelvic fins below, an anal fin toward the rear underside, and a broad, slightly forked caudal fin (tail). Capturing even a simplified version of these features is what makes the difference between a generic fish plush and something that actually looks like a largemouth bass.

Gauge and Sizing

For this pattern, your gauge should be approximately 16 stitches and 18 rows equal 4 inches in single crochet worked in the round. The finished plush measures approximately 12–14 inches from mouth to tail and about 5 inches at its widest point. If you want a larger or smaller fish, adjust your hook size accordingly — going up to a 5.5mm hook with bulky yarn will give you a fish nearly twice the size, which makes a fantastic wall mount prop.

Pattern Abbreviations

Throughout this pattern, the following abbreviations are used: ch (chain), sc (single crochet), inc (increase — 2 sc in the same stitch), dec (invisible decrease — insert hook through front loops of next two stitches), sl st (slip stitch), MR (magic ring), st (stitch), and rnd (round).

Part One: The Body

The body is worked in the round from the nose toward the tail. You’ll work the mouth opening separately and attach it, which gives the bass that signature wide-jaw look.

Rounds 1–3 (Starting at the nose): Begin with your medium green yarn. Make a magic ring and sc 6 into it. Pull tight. Place a stitch marker to mark the beginning of each round. Round 2: inc in each st around (12 sts). Round 3: [sc 1, inc] repeat around (18 sts).

Rounds 4–6: [sc 2, inc] repeat around (24 sts). Then [sc 3, inc] repeat around (30 sts). Then [sc 4, inc] repeat around (36 sts).

Rounds 7–10: sc around evenly without increases (36 sts per round). This creates the nose taper before the widest part of the body.

Rounds 11–15: [sc 5, inc] repeat around (42 sts). Then sc evenly for 4 rounds. This is where the body starts to reach its widest point, just behind where the gills will be.

Rounds 16–20: [sc 6, inc] repeat around (48 sts). Sc evenly for 4 rounds.

Color transition: At this point, begin transitioning your yarn color from medium green toward a lighter olive or yellow-green on the sides. You can do this by switching yarn colors on one side of the body for 5–6 stitches per round, gradually expanding the lighter section as you work further back toward the tail. The top of the fish stays dark green and the bottom transitions to cream. Work this color transition over the next 8–10 rounds.

Rounds 21–30: Sc evenly for 10 rounds (48 sts), maintaining your color pattern. Insert the safety eyes in this section, approximately at round 22–23, positioned toward the upper-front of the body. The eyes should sit slightly forward on the head, as they do on a real bass.

Rounds 31–35: Begin decreasing. [sc 6, dec] repeat around (42 sts). Sc evenly for 2 rounds. [sc 5, dec] repeat around (36 sts). Sc evenly for 2 rounds.

Rounds 36–42: [sc 4, dec] repeat around (30 sts). Sc evenly for 2 rounds. [sc 3, dec] repeat around (24 sts). Sc evenly for 1 round. Stuff the body firmly with fiberfill at this point before the opening gets too small. Make sure to stuff the nose area firmly so it holds its shape.

Rounds 43–48: [sc 2, dec] repeat around (18 sts). Sc evenly for 1 round. [sc 1, dec] repeat around (12 sts). Do not fasten off yet — you’ll attach the tail fin directly to this opening.

Part Two: The Mouth

The mouth is one of the most important features that makes this plush recognizable as a bass. It’s worked separately and sewn onto the front of the body.

Upper jaw: With cream yarn, ch 12. Row 1: sc in second ch from hook and in each ch across (11 sts). Ch 1, turn. Rows 2–4: sc across. Ch 1, turn. Begin shaping: sc across for 3 more rows, decreasing 1 st at each end each row (5 sts remain). Fasten off. This piece should be slightly curved — you can block it into shape with a little moisture and let it dry.

Lower jaw: Repeat the same process as the upper jaw, but work 2 additional rows before beginning the decreases to make the lower jaw slightly wider and more pronounced.

Assembling the mouth: Fold each jaw piece so the side edges meet, forming a shallow cup shape. Stuff lightly. Sew the upper jaw to the lower jaw at the sides, leaving the front opening wide. Then sew the assembled mouth onto the front of the body, centering it at the nose end. Use a whip stitch around the perimeter and pull firmly to secure. The mouth should protrude slightly from the face, giving that gaping bass look.

Part Three: The Fins

The fins are crocheted flat and either sewn on or inserted into a small slit in the body before seaming, depending on your preference.

Dorsal Fin (make 1): The dorsal fin runs along the back and is one of the largest features. With dark green and gray yarn, ch 20. Row 1: sc in second ch from hook and in each ch (19 sts). Ch 1, turn. Row 2: dec, sc to last 2 sts, dec (17 sts). Turn. Continue decreasing 1 st at each end every other row until 7 sts remain. Fasten off, leaving a long tail for sewing. For the spiny forward section of the dorsal fin, use the same technique but start with ch 10 and taper more steeply. Sew this smaller piece to the front of the larger dorsal piece. Stiffen with fabric stiffener if desired.

Pectoral Fins (make 2): Ch 10. Row 1: sc in second ch from hook and in each ch (9 sts). Ch 1, turn. Row 2: sc across, decreasing 1 at each end (7 sts). Continue this decrease pattern until 3 sts remain. Fasten off. These oval-shaped fins attach just behind the gill area on each side of the body.

Pelvic Fins (make 2): Ch 7. Row 1: sc in second ch from hook and in each ch (6 sts). Ch 1, turn. Row 2: sc across, dec at end (5 sts). Continue until 2 sts remain. These small fins attach to the lower belly area, slightly forward of center.

Anal Fin (make 1): Ch 9. Row 1: sc in each ch (8 sts). Row 2: dec, sc to end (7 sts). Continue until 3 sts remain. This attaches to the underside near the tail.

Caudal Fin / Tail (make 2 pieces, sew together): Ch 15. Row 1: sc in second ch from hook and in each ch (14 sts). Row 2: inc, sc across, inc (16 sts). Row 3: sc across. Row 4: inc, sc across, inc (18 sts). Continue adding 2 sts every other row until you have 24 sts. Then reverse and decrease back down to 14 sts. Make a second piece identical to this. Place them wrong sides together and sc around the perimeter with dark green yarn to join them, stuffing lightly before closing. The finished tail should be slightly forked — you can achieve this by sewing a small seam up the center of the tail a third of the way from the outer edge.

Part Four: The Lateral Line and Color Details

One of the most distinctive features of a largemouth bass is the bold, dark horizontal stripe running along the midsection. Once the body is assembled, use black yarn threaded on a tapestry needle to embroider this stripe with long running stitches from behind the gill area all the way to the base of the tail. Keep the stitches even and at the same height along the body. Three or four stitches worked over the same line will give it enough visual weight to show clearly.

For additional realism, use a small amount of yellow-green yarn to add a few stitches in the gill area just behind the eye. You can also use a dark green or black yarn to lightly embroider a few irregular spots or blotches along the lateral line — real largemouth bass have a somewhat mottled pattern, and even a few suggested spots make the plush look more lifelike.

If you want to add gill lines, use a tapestry needle with dark gray yarn to embroider a slight curve on each side of the head just behind the eye, following the natural curve of a gill plate.

Assembly

Once all pieces are finished, assembly goes fairly quickly. Start by attaching the tail to the open end of the body, sewing it securely all the way around the opening. Next, position the dorsal fin along the center top of the back and pin it in place before sewing — getting this centered makes a big difference in the finished look. Sew it down with a running stitch along the base.

Attach the pectoral fins on either side of the body just behind the gill area. These should angle slightly backward, the way a real fish’s pectoral fins do when at rest. Sew the pelvic fins to the lower belly, and the anal fin near the rear underside just in front of the tail.

Finally, give the mouth one more look to make sure it’s secure. If any parts of the seam look loose, reinforce with additional stitches. Weave in all ends carefully — with a plush that gets handled regularly, loose ends can work their way out over time.

Tips for a More Realistic Finish

A few small choices make a dramatic difference in the final look of your plush bass. Using a slightly variegated green yarn for the body, rather than a solid color, adds natural depth without requiring any extra color work. Positioning the safety eyes at a slight angle — tilted so the iris faces slightly upward — mimics the way a bass’s eye naturally sits. Pressing the finished fish lightly under a damp cloth and allowing it to dry in shape will smooth out any uneven stitches and give it a more polished appearance.

If you want the fins to have more structural integrity so they stand up and hold their shape, cut small pieces of craft felt the same shape as each fin and sew them to the back of the crocheted pieces before attaching. This gives the fins body without adding significant weight.

Making It a Gift

This plush bass makes an exceptional gift for anyone who loves fishing, especially when paired with a little handmade touch. Some crafters add a small embroidered weight and length measurement along the belly, mimicking the way anglers mark a trophy catch. Others sew a small loop to the back of the dorsal fin so the fish can hang on a wall like a mount. Presented in a gift box lined with faux grass or shredded green tissue paper, it looks like a genuine trophy — just a softer, cuddlier version.

For children’s rooms, consider making a set of several different sizes to suggest a school of bass, or pair your largemouth bass plush with other fish patterns to create a whole aquatic scene. The same basic body shape with color adjustments works beautifully for bluegill, crappie, and trout.

Final Thoughts

Crocheting a realistic largemouth bass is one of those projects that rewards patience and attention to detail. Each individual step — shaping the body, crafting the wide mouth, building the fins, adding the lateral stripe — is manageable on its own, but together they add up to something that genuinely looks like it swam in from a lake rather than came off a hook. Whether you’re an avid angler or simply someone who appreciates the challenge of making lifelike creatures in fiber, this pattern offers a satisfying blend of technique and artistry.

Take your time with the color transitions and the embroidered details. Don’t skip the lateral line. Make the mouth wider than you think it needs to be. And when someone picks it up and says “wait, is that a real largemouth bass?” — that’s the moment you’ll know you got it exactly right.

Happy crocheting, and good luck on the water.