Japanese gregory (Stegastes altus)

Scientific name: Stegastes altus Okada & Ikeda, 1937

Japanese gregory (Stegastes altus)

The Japanese gregory (Stegastes altus) is a marine fish of the family Pomacentridae. Native range: Northwest Pacific, known only from Japan and the adjacent Ryukyu Islands. Recently reported from Taiwan and South Korea.

Biology

Dorsal spines (total): 12 - 13; Dorsal soft rays (total): 15-17; Anal spines: 2; Anal soft rays: 12 - 13. Body color is medium brown, sometimes with slight diffusion of yellow. The edges of scales are narrowly bordered with dusky brown. The suborbital is lavender or blue and the lips are pale gray. The pectoral fins are translucent with brownish rays and yellow suffusion on posterior edge. A prominent black spot bordered with light blue is on the outer part of anterior dorsal spines running from base of 1st spine to distal tip of 5th or 6th spine.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Stegastes altus
Family
Pomacentridae (Damselfishes)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
15.0
Depth range
5–20 m (16–66 ft)
Environment
Marine; reef-associated; non-migratory; depth range 5 - 20 m
Climate
Subtropical
Distribution
Northwest Pacific: known only from Japan and the adjacent Ryukyu Islands. Recently reported from Taiwan and South Korea.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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