Actinopteri (ray-finned fishes) > Acanthuriformes
(Surgeonfishes) > Ephippidae
(Spadefishes, batfishes and scats)
Etymology: Chaetodipterus: Greek, chaite = hair + Greek, dipteros = with two fins (Ref. 45335). More on author: Girard.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 3 - 50 m (Ref. 37955). Subtropical; 33°N - 15°S, 118°W - 76°W
Eastern Pacific: San Diego, California, USA to Peru.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 65.0 cm TL male/unsexed; (Ref. 2850); common length : 25.0 cm TL male/unsexed; (Ref. 55763)
Body very deep and compressed; head short, with a slopping, slightly concave profile; mouth small and terminal; snout blunt and not at all prominent; posterior end of jaw not surpassing anterior rim of eye; branchiostegal membranes joined to isthmus; dorsal fin spines well developed (Ref. 55763).
Found in inshore areas with sandy bottoms or coral reefs, forming small schools (Ref. 9299). Feeds on benthic invertebrates (Ref. 37955). Minimum depth reported from Ref. 2850.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Eschmeyer, W.N., E.S. Herald and H. Hammann, 1983. A field guide to Pacific coast fishes of North America. Boston (MA, USA): Houghton Mifflin Company. xii+336 p. (Ref. 2850)
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
): 20.6 - 28.5, mean 25.6 °C (based on 60 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.02138 (0.01152 - 0.03968), b=2.85 (2.69 - 3.01), in cm total length, based on LWR estimates for this species & (Sub)family-body (Ref. 93245
Trophic level (Ref. 69278
): 3.3 ±0.43 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (51 of 100) .