Actinopteri (ray-finned fishes) > Pleuronectiformes
(Flatfishes) > Bothidae
Etymology: Chascanopsetta: Greek, chaskanon, -ou = a mask used in classicla Greek theatre with the mouth opened + Greek, psetta = grouper (Ref. 45335). More on author: Norman.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 494 - 550 m (Ref. 11412), usually - m (Ref. ). Deep-water; 0°C -
Indo-Pacific: Maldives, Japan and the Ryukyu Trough.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
soft rays: 86 - 93;
Vertebrae: 59 - 61. Similar to C. lugubris, but differs from it by lower jaw projecting well beyond the tip of the upper jaw, and the length of the lower, longer than head length. Mandibular membrane very thin, forming distinct gular pouch. Length of upper jaw about equal to head length (Ref. 559). Length of lower jaw on ocular side 22.7-26.5% SL, on blind side 22.2-26.9; depth of caudal peduncle 4.0-4.9% SL (Ref. 10737).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Masuda, H., K. Amaoka, C. Araga, T. Uyeno and T. Yoshino, 1984. The fishes of the Japanese Archipelago. Vol. 1. Tokai University Press, Tokyo, Japan. 437 p. (text). (Ref. 559)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 2.3 - 10.4, mean 8.7 °C (based on 16 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00912 (0.00408 - 0.02036), b=3.05 (2.87 - 3.23), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.7 ±0.4 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (49 of 100) .