Black Cap Jawfish (Opistognathus randalli)

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Black Cap Jawfish

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Black Cap Jawfish

Opistognathus randalli

114 Litres (30 US G.)

8.9-10.2cm (3.5-4 ")


8.1 - 8.4

22.2-25.6°C (72 -78 °F)

8-12 °d

1:1 M:F

Live Foods

5-8 years



Tank compatibility[edit]

This fish is reef-safe and should be kept with similar-sized peaceful reef-dwelling fish. It is peaceful towards tank mates but is highly territorial towards its own species. Keep only one Jawfish to a tank unless you have a mated pair.

Environment specifics[edit]

There must be a reasonable amount of substrate for this fish, either sand or small gravel, as this is a burrowing fish. A tight fitting lid is a must as this fish is also an excellent escape artist!


External links[edit]