Actinopterygii (ray-finned fishes) > Perciformes
(Perch-likes) > Ephippidae
(Spadefishes, batfishes and scats)
Etymology: Chaetodipterus: Greek, chaite = hair + Greek, dipteros = with two fins (Ref. 45335).
Environment / Climate / Range
Marine; brackish; reef-associated; oceanodromous (Ref. 51243); depth range 3 - 35 m (Ref. 26912). Subtropical; 43°N - 24°S
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 12 - ? cm
Max length : 91.0 cm TL male/unsexed; (Ref. 7251); common length : 50.4 cm TL male/unsexed; (Ref. 26466); max. published weight: 9.0 kg (Ref. 7251)
soft rays: 17 - 18. Very deep-bodied, compressed, disk-shaped fish with a very blunt snout. Irregular, bold, blackish, vertical bands that fade with age. Second dorsal and anal fins have high anterior lobes (Ref. 26938). Mouth small, the maxilla of adults ending beneath nostrils; no teeth on roof of mouth; scales ctenoid; head and fins scaled; opercle ends in an obtuse point (Ref. 13442).
Western Atlantic: Massachusetts, USA and northern Gulf of Mexico to Rio Grande do Sul, Brazil (Ref. 47377).
Abundant in shallow coastal waters, from mangroves and sandy beaches to wrecks and harbors. Juveniles (black phase) are common in estuaries and often found in very shallow water swimming at an angle resembling dead leaves or as infertile red mangrove pods and other debris. Adults often occur in very large schools of up to 500 individuals (Ref. 9710). Feed on benthic invertebrates like crustaceans, mollusks, annelids, cnidarians as well as on plankton (Ref. 35237). Good food fish (Ref. 5521); marketed fresh (Ref. 5217). Often circles divers (Ref. 9710). Minimum depth from Ref. 9710. In southeastern Brazil found between 23 and 45 m (Ref. 47377). Has been reared in captivity (Ref. 35425).
Robins, C.R. and G.C. Ray, 1986. A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p.
IUCN Red List Status (Ref. 90363)
Threat to humans
Reports of ciguatera poisoning (Ref. 30303)
Fisheries: minor commercial; aquaculture: commercial; gamefish: yes; aquarium: public aquariums
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on empirical models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.03630 (0.02666 - 0.04943), b=3.00 (2.91 - 3.09), based on LWR estimates for this species (Ref. 93245
Trophic Level (Ref. 69278
): 4.5 ±0.0 se; Based on diet studies.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (tmax=8; tm=1; K=0.34).
Vulnerability (Ref. 59153
): Moderate vulnerability (37 of 100) .