How to Identify Clown Killifish

To identify Clown Killifish (Epiplatys annulatus), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is typically yellowish to light brown, adorned with 4-5 prominent, dark vertical bands. The fins are often brightly colored, with the dorsal and anal fins displaying red, yellow, and blue hues, and the caudal fin (tail) often having a distinctive 'rocket' shape with elongated rays, particularly in males. Males are generally more colorful and have more extended finnage than females.

Scale type

cycloid

Mouth position

superior

Distinctive features

Small size, typically reaching 3-4 cm (1.2-1.6 inches) in total length., 4-5 dark vertical bands on a lighter body., Brightly colored fins, especially in males., Rocket-shaped caudal fin in males.

Dorsal fin

Small, set far back on the body, close to the caudal fin.

Tail fin

Spatulate to 'rocket-shaped' with elongated rays, particularly in males.

Pectoral fin

Small and transparent.

Distinctive fins

The dorsal and anal fins are often adorned with vibrant red, yellow, and blue markings, especially in mature males. The caudal fin's unique shape is a key identifier.

Identification Tips

1. 1

   Size and Body Shape

   Look for a very small, slender fish, typically under 4 cm, with an elongated body.

2. 2

   Coloration and Pattern

   Identify the distinct 4-5 dark vertical bands on a lighter, yellowish body. Males will have more vibrant fin coloration.

3. 3

   Fin Shape

   Observe the unique 'rocket' shape of the caudal fin, especially in males, which often has elongated rays.

4. 4

   Mouth Position

   Note the upturned mouth, indicating its surface-feeding habits.

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