Blue flounder (Crossorhombus azureus)

Scientific name: Crossorhombus azureus Alcock, 1889

Blue flounder (Crossorhombus azureus)

The Blue flounder (Crossorhombus azureus) is a marine fish of the family Bothidae. Native range: Indo-West Pacific, Bay of Bengal, northwestern Australia, South China Sea, China, Taiwan, Japan, Viet Nam, and Aru Islands, Indonesia.

Biology

Dorsal soft rays (total): 84-92; Anal soft rays: 63 - 74. Ground colour on eyed side brownish grey, with darker spots and blotches. Fins paler than body, dorsal and anal fins with small dark spots, caudal fin with 2 distinct dark bands. Males with small dark spots in anterior part of interorbital region. Blind side whitish in females. Males with distinct bluish black pyriform colour pattern on blind side. Body ovoid, its depth 1.7 to 2 times in SL. Head small, snout shorter than eye, profile steep anterior to interorbital area. Head length 3.3 to 4.5 times in SL. Interorbital region broad and concave, wider in males than females in specimens greater than about 6 cm SL. Males with a rostral spine and 1 to 3 low bony bumps around orbits. Both eyes on left side of head, front margin of upper eye slightly behind front margin of lower eye. Both eyes in males larger than about 6 cm SL with a flap on posterior area. Mouth small, reaching to or slightly beyond anterio

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Crossorhombus azureus
Family
Bothidae (Lefteye flounders)
Order
Pleuronectiformes (Flatfishes)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
18.0
Depth range
13–60 m (43–197 ft)
Environment
Marine; demersal; depth range 13 - 60 m
Climate
Tropical
Distribution
Indo-West Pacific: Bay of Bengal, northwestern Australia, South China Sea, China, Taiwan, Japan, Viet Nam, and Aru Islands, Indonesia.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries: of no interest
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (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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