Gold-Specs Jawfish

Opistognathus randalli

Also known as Randall's Jawfish, Black Cap Jawfish, Goldspecs Jawfish

SaltwaterFish

Care at a glance

Temperature
73–81°F (23–27°C)
pH
8.1–8.4
Adult size
3.9 in (10 cm)
Minimum tank
30 gal (115 L)
Temperament
Peaceful
Social behavior
Social
Swim level
Bottom
Difficulty
Easy
Breeding
Hard
Rarity
Common
Reef safe
Reef safe
Origin
Native to the western Pacific, from Indonesia and the Philippines to Micronesia, in sandy rubble areas near reefs.
Family
Opistognathidae

Overview

Provide a 115 litre or larger tank with at least 8 cm of mixed sand and rubble and a secure lid, kept at 23 to 27 C and pH 8.1 to 8.4. It is reef safe and peaceful toward other species but territorial to its own kind, so keep one unless you have a pair and a large footprint. Feed small meaty foods such as mysis, enriched brine, and chopped seafood. Keep tiny ornamental shrimp out of reach of its mouth.

In the wild

The gold-specs jawfish builds a burrow in mixed sand and rubble and hovers above it, watching for food and threats. It is pale with a dark cap on the head and a gold ring around the eye. It carries mouthfuls of substrate to shore up the burrow walls. A deep bed of mixed grain sizes lets it dig and line its home.

Good to know

Opistognathus randalli is a western Pacific jawfish in the family Opistognathidae, named after the ichthyologist John Randall. It is a mouthbrooding fish, with the male incubating the eggs in his mouth. It uses shells and coral bits to reinforce the mouth of its burrow.

Did you know

Watching a jawfish rebuild its burrow, carrying one mouthful of gravel at a time, is one of the more entertaining sights in a sand bed tank.

Where to buy

Some links may not be the exact species or variety.

…or ask your local fish store.

Appears in

Saltwater fish · Beginner fish · Reef-safe fish · Beginner saltwater fish

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