Blackbanded sunfish

Enneacanthus chaetodon

Also known as Black-banded sunfish, Chaetodon sunfish

FreshwaterFish

Care at a glance

Temperature
39–75°F
4–24°C
pH
5.5–7.0
Adult size
3.9 in
10 cm
Minimum tank
20 gal
75 L
Temperament
Peaceful
Social behavior
Social
Tankmates
With caution
Swim level
Middle
Difficulty
Medium
Breeding
Medium
Rarity
Rare
Family
Centrarchidae
Origin
Native to the Atlantic coastal plain of the eastern United States, from New Jersey to Florida, in soft, acidic, weedy ponds and streams.

Overview

A coldwater native at around 10 cm, it needs a planted tank of at least 75 litres and should not be kept warm long term. Provide soft, acidic water at pH 5.5 to 7.0 and a cool range of 4 to 24 C, ideally unheated with a winter chill. Keep it in a small group with peaceful, cool-water tankmates. It prefers live and frozen foods such as bloodworm, daphnia and small earthworms over flake.

In the wild

The blackbanded sunfish is a small, disc-shaped North American native crossed by bold black bars, with orange highlights in the front fin rays. It comes from soft, acidic, weedy coastal ponds. It is a true coldwater fish that suffers if kept warm.

Good to know

Enneacanthus chaetodon reaches about 10 cm and belongs to the sunfish family Centrarchidae. It naturally experiences water from near freezing in winter to the low twenties Celsius in summer. It is a nest-spawner, with the male guarding the eggs.

Did you know

Blackbanded sunfish need a genuine cold winter to thrive and breed, so a heated tropical tank slowly wears them down.

Common questions

What size tank does a Blackbanded sunfish need?

A Blackbanded sunfish needs at least 20 gal (75 L). It spends most of its time in the middle.

What temperature and pH does a Blackbanded sunfish need?

A Blackbanded sunfish is comfortable at 39–75°F (4–24°C) with a pH of 5.5–7.0.

How big does a Blackbanded sunfish get?

An adult Blackbanded sunfish reaches about 3.9 in (10 cm).

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