Actinopteri (ray-finned fishes) > Beryciformes
(Sawbellies) > Cetomimidae
Etymology: Cetostoma: Greek, ketos = a marine monster, whale + Greek, stoma = mouth (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 0 - 2250 m (Ref. 6715). Deep-water; 50°N - 40°S, 35°E - 13°W
Atlantic Ocean: between 50°N to 40°S; one specimen was recorded at 30°45'N, 25°47'W (Ref. 6715) and 8 specimens from 28°N, 16°E. Indian Ocean: between15°N and 31°S. Pacific Ocean: between 45°N and 15°S, and off central California, USA.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 24.7 cm SL male/unsexed; (Ref. 9791)
Morphology | Morphometrics
Normal diurnal distribution is between 700 and 1200 m The shallowest diurnal capture (500-600 m) is of one of the smallest specimens (4.3 cm) and the deepest (1500-1600 m) is of one of the largest (20.4 cm), indicating a trend for the diurnal depth to increase with increasing size (Ref. 9791). Nocturnal distribution is between 110-700 m (Ref. 9791). Feeds on decapods and euphausiids (Ref. 6715). Minimum depth from Ref. 58018.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Paxton, J.R. and D.J. Blake, 1990. Cetomimidae. p. 607-608. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Parisl. Vol. 2. (Ref. 6532)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 4.9 - 13.9, mean 8.1 °C (based on 1132 cells).
Phylogenetic diversity index (Ref. 82805
= 1.0000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.45 se; based on food items.
Generation time: 1.6 ( na - na) years. Estimated as median ln(3)/K based on 1 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low vulnerability (22 of 100) .