Blackfin dartfish (Ptereleotris evides)

Scientific name: Ptereleotris evides Jordan & Hubbs, 1925

The Blackfin dartfish (Ptereleotris evides) is a marine fish of the family Ptereleotridae. In the aquarium it needs water at 21–27°C (70–81°F).

Blackfin dartfish care at a glance

Temperature: 21–27°C (70–81°F)

Biology

Dorsal spines (total): 7; Dorsal soft rays (total): 23-26; Anal spines: 1; Anal soft rays: 23 - 26; Vertebrae: 26. Light bluish gray in life, shading posteriorly to black; snout blackish; operculum with iridescent blue markings. Chin with a low fleshy protuberance, narrowing posteriorly to a low longitudinal fold. Caudal fin lobes blackish to dark reddish, broad centro-posterior region of fin whitish to yellowish; 1st dorsal fin dull orangish; 2nd dorsal and anal fins largely blackish; pectoral base with an orange to orange-red bar edged in blue. Juveniles with an oval black spot larger than eye at lower base of caudal fin.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Ptereleotris evides
Family: Ptereleotridae (Dartfishes)
Order: Perciformes (Perch-like fish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 14.0
Depth range: 2–15 m (7–49 ft)
Environment: Marine; reef-associated; depth range 2 - 15 m, usually 2 - 15 m
Climate: Tropical
Distribution: Indo-Pacific: Red Sea and East Africa to the Line and Society islands, north to the Ryukyu and Ogasawara islands, south to New South Wales, Lord Howe Island, and Rapa.
Conservation status (IUCN): Not Evaluated
Threat to humans: Harmless
Uses: Aquarium: commercial