How do I make the fins stand up?

You can insert thin craft wire or stiff felt inside the organza fins to help them hold their shape while remaining lightweight.

What is the easiest way to get a scale effect?

Hold a pair of fishnet tights tightly against your skin, then dab metallic or iridescent eyeshadow over the mesh using a makeup sponge.

Can I make this last-minute?

Yes! Wear a solid yellow or black outfit, tape or pin yellow paper fins to your back, and use quick scale makeup.

AI-generated example

Angelfish Costume

Swim into the spotlight with elegant, flowing tropical fins.

The Angelfish is one of the most elegant and recognizable creatures in the ocean, making it a popular choice for aquatic-themed events and Halloween. This costume captures the fish's graceful beauty with a vibrant, striped base and long, flowing fins that mimic its underwater movement [2.1.8]. It is a whimsical, colorful look that stands out in any crowd.

Difficulty: Medium
Time: ~45 min
Budget: $30–80

See yourself as Angelfish →What you need Buy the Angelfish costume

Try it on

See yourself as Angelfish

One clear photo of yourself; we render you in this costume — face untouched, full body, about 20 seconds.

Choose or drop a photo of yourselfJPG · PNG · HEIC

One render, $1. No account needed — if it fails you're not charged. Pricing.

Your photo is sent to Google's Gemini API to make the render and isn't used for training. Renders are AI-generated and labelled.

Want a different costume on this photo, or a whole group in costume? Open the Try-On Studio.

Angelfish costume — Example look · AI-generated

You as Angelfish

Result

What you need for a Angelfish costume

Short on time? Buy it ready-made

Spirit Halloween sells the complete Angelfish costume — one box instead of 6 pieces.

Shop Angelfish at Spirit ↗

Striped dress or bodysuit
A form-fitting outfit featuring bold yellow, black, and white vertical or diagonal stripes.
DIY: Use fabric paint or black duct tape to add stripes to a plain yellow dress or t-shirt.
Amazon
Yellow organza or tulle fabric
Lightweight, sheer yellow fabric used to create the long, trailing dorsal and ventral fins.
DIY: Repurpose a yellow mesh shower curtain or an old yellow tutu.
Amazon
Fin headband
A simple plastic headband decorated with a stiff yellow felt or craft foam fin.
DIY: Cut a fin shape out of yellow cardboard or craft foam and hot glue it to a plain headband.
Amazon
Fishnet stockings
Classic black fishnets to wear on your legs, or a spare pair to use as a makeup stencil.
Amazon
Fabric glue or safety pins
Essential fasteners to securely attach the fabric fins to your outfit without sewing.
DIY: Use safety pins for a temporary, damage-free hold.
Amazon
Shimmery face paint or eyeshadow
A palette of metallic yellow, teal, and silver to create realistic scale details.
DIY: Use standard cosmetic eyeshadows mixed with a little setting spray.
Amazon

Rather not assemble it? See ready-made Angelfish costumes at Spirit Halloween ↗

How to put it together

1
Put on the striped dress or bodysuit as your vibrant, tropical base layer.
2
Cut the yellow organza or tulle fabric into long, pointed teardrop shapes to represent trailing fins.
3
Secure the largest fabric fin to the upper back of your outfit using fabric glue or safety pins to act as the dorsal fin.
4
Attach smaller, longer fabric fins to your wrists or sleeves so they flow gracefully when you move your arms.
5
Put on the fin headband, ensuring it sits securely on your head.
6
Apply the scale makeup using the fishnet stencil technique and complete the look with fishnet stockings.

Makeup & hair

Use a fishnet stocking as a stencil over your temples and cheekbones, patting shimmery yellow, teal, and silver eyeshadow over it to create a realistic scale pattern. Style your hair in a sleek, wet-look high ponytail or slicked back with gel to mimic an aquatic, hydrodynamic style.

Angelfish for couples, groups, kids & more

couples: Pair up with someone dressed as a scuba diver or a colorful clownfish for a perfect underwater duo.
group: Create a vibrant coral reef group with friends dressed as jellyfish, starfish, sea anemones, and sharks.
kids: Use a bright yellow t-shirt with black fabric paint stripes and attach felt fins to the back and sleeves.
Plus size: A flowing, striped A-line dress or a comfortable tunic paired with leggings provides a flattering, breezy fit.
pet: A simple yellow pet vest with black felt stripes and a soft fabric fin attached to the back.

Tips

Choose lightweight fabrics like organza or tulle for the fins so they float gracefully without weighing you down.
If wearing this outdoors, layer a black long-sleeve thermal shirt and black leggings underneath the striped outfit.
For photos, spread your arms wide to show off the trailing wrist fins and capture the full silhouette of the fish.
Use cosmetic-grade glitter gel on your collarbones and shoulders to catch the light like sparkling water.

Angelfish costume FAQ

How do I make the fins stand up?: You can insert thin craft wire or stiff felt inside the organza fins to help them hold their shape while remaining lightweight.
What is the easiest way to get a scale effect?: Hold a pair of fishnet tights tightly against your skin, then dab metallic or iridescent eyeshadow over the mesh using a makeup sponge.
Can I make this last-minute?: Yes! Wear a solid yellow or black outfit, tape or pin yellow paper fins to your back, and use quick scale makeup.

Did you know? Real freshwater angelfish are native to the Amazon Basin and are known for their extremely flat, disc-shaped bodies, which help them glide effortlessly through dense aquatic plants.