How to Identify Tiger Goby

To identify Tiger Goby (Gobiodon rigaudii), look at these key features.

Physical Characteristics

Body shape

compressed

Coloration

The body is typically yellow to orange with several distinct, dark vertical bands (usually 4-6) that extend from the dorsal to the ventral side. The intensity and number of bands can vary slightly. Some individuals may have blue or purple markings on the head or fins.

Scale type

cycloid

Mouth position

superior

Distinctive features

Small, compressed body, Prominent vertical dark bands on a yellow/orange background, Large eyes positioned dorsally, Fused pelvic fins forming a suction cup-like disc

Dorsal fin

Two dorsal fins; the first dorsal fin has 6 spines, and the second dorsal fin has 1 spine and 8-10 soft rays. The first dorsal fin is typically lower than the second.

Tail fin

Rounded caudal fin.

Pectoral fin

Pectoral fins are relatively large and rounded, with 17-19 rays.

Distinctive fins

Pelvic fins are fused into a disc-like structure, characteristic of gobies, used for clinging to coral branches.

Identification Tips

1. 1

   Coloration and Pattern

   Look for the distinctive yellow to orange body with 4-6 prominent dark vertical bands. This is the primary distinguishing feature.

2. 2

   Habitat Association

   Always found living within the branches of live Acropora corals. If you see a small goby in branching coral, it's likely a Gobiodon species.

3. 3

   Body Shape

   Its compressed body and relatively large head are characteristic of the genus Gobiodon.

4. 4

   Pelvic Fins

   The fused pelvic fins forming a suction cup are a key goby characteristic, allowing them to cling to coral.

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