Aquarium Fish

Blackmouth Chromis

posted: 05/15/12
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Blackmouth Chromis
Courtesy of Drs. Foster and Smith
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The Blackmouth Chromis, also known as the Bicolor Blackmouth Chromis, Blackmouth Bicolor Chromis, Blackmouth Damselfish, or Behn's Damselfish, is an attractive fish as a juvenile, yellow with two, horizontal black bars. The fish changes color to brown and black with maturity.

As the fish matures, it becomes extremely aggressive towards other fish, causing problems in selection of other fish to add to the aquarium. A 30-gallon tank or larger is suitable in size for the Blackmouth Chromis. It feeds on zooplankton and algae and is prone to disease if proper aquarium management is not practiced.

The diet should consist of a variety of meaty items, frozen preparations, and some vegetable matter.

Like other damselfish, they are generally compatible with: Dwarf Angelfish, Large Angelfish, Anthias, Basslets, Blennies, Boxfish, Clownfish, Goatfish, Gobies, Hawkfish, Hogfish, Parrotfish, Pseudochromis, Puffers, Tangs & Surgeons and Wrasse.

Fish Facts

Name: Blackmouth Chromis (Neoglyphidodon nigoris, Paraglyphidodon nigoris)

Family: Pomacentridae

Range: Indo-Pacific

Size: Up to 5 inches

Diet: Omnivore

Tank Set-up: Marine: Coral or rock, plants

Reef Compatible: Yes

Tank Conditions: 72-78°F; sg 1.020-1.025; pH 8.1-8.4

Minimum Tank Capacity: 30 gallon

Light: High

Temperament: Aggressive

Swimming Level: No specific level

Care Level: Easy

Care Level: Egg Depositor

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