Clown Killifish (Epiplatys annulatus) in a planted freshwater aquarium
Peaceful Moderate Schooling

Clown Killifish

Epiplatys annulatus

Minimum Tank

5 Gallons

Adult Size

1.5 inches

Temperature

73-79°F (23-26°C)

pH Range

6.0-7.5

Lifespan

3 years

School Size

6+ fish

About Clown Killifish

The clown killifish is a tiny, brilliantly colored surface-dwelling fish from the shallow waters of Guinea, Liberia, and Sierra Leone in West Africa. Its body displays bold, alternating bands of cream and dark brown, topped with a spectacular fan-shaped tail fin painted in vivid blue, red, and yellow. Despite being a killifish, clown killis are not annual species and do not require a dry period for their eggs, making them much easier to keep than many killifish. They inhabit the very surface layer of the water, where they hunt tiny insects and surface-dwelling invertebrates. At just 1.5 inches, they are perfect for nano tanks and add stunning color to the often-neglected top water level.

Care Requirements

Tank Setup

  • • Minimum 5-gallon tank required
  • • Temperature: 73-79°F (23-26°C)
  • • pH: 6.0 - 7.5
  • • Category: Killifish

Diet & Feeding

  • • Diet type: Carnivore
  • • Feed 1-2 times daily
  • • Varied diet recommended

Tank Mate Compatibility

Compatible With

🐟 Small Peaceful Fish
🐟 Shrimp
🐟 Snails

Avoid Keeping With

⚠️
Large Fish Not compatible
⚠️
Aggressive Fish Not compatible

Care Tips

Expert Tips

Clown killifish are surface dwellers that need floating plants and surface cover to feel secure. Keep them in a nano tank of at least 5 gallons with a tight-fitting lid, as they are skilled jumpers. They prefer warm, soft, slightly acidic water at 73-79°F with very gentle flow. Provide floating plants like water lettuce or salvinia that mimic their natural habitat. Feed small floating foods including micro-pellets, crushed flakes, and live or frozen foods like baby brine shrimp and daphnia. Avoid strong filtration and surface agitation. Males may spar mildly but rarely cause harm. They are peaceful with other tiny species and do well in planted nano community setups.

Quick Facts

19L

Min Tank (5gal)

4cm

Adult Size (1.5")

3yr

Lifespan

6+

Min School

Build Your Perfect Community Tank

Find compatible tankmates for your Clown Killifish

Related Species You Might Like

Tank Mates for Clown Killifish

Species from our database with overlapping water parameters, compatible temperaments and a realistic shared tank size.

Similar Care Level

Other moderate-care species that suit a comparable setup.

Browse all killifish species

Frequently Asked Questions

What size tank does a Clown Killifish need?

A Clown Killifish needs a minimum tank size of 5 gallons (19 litres). They should be kept in schools of at least 6.

What water parameters does a Clown Killifish need?

Clown Killifish thrive in water between 73-79°F (23-26°C) with a pH of 6.0-7.5.

Are Clown Killifish easy to care for?

Clown Killifish are considered moderate to care for. They are peaceful fish with a lifespan of about 3 years.

How big do Clown Killifish get and what do they eat?

Clown Killifish reach about 1.5 inches and are carnivores. Clown killifish are surface dwellers that need floating plants and surface cover to feel secure. Keep them in a nano tank of at least 5 gallons with a tight-fitting lid, as they are skilled jumpers. They prefer warm, soft, slightly acidic water at 73-79°F with very gentle flow. Provide floating plants like water lettuce or salvinia that mimic their natural habitat. Feed small floating foods including micro-pellets, crushed flakes, and live or frozen foods like baby brine shrimp and daphnia. Avoid strong filtration and surface agitation. Males may spar mildly but rarely cause harm. They are peaceful with other tiny species and do well in planted nano community setups.