Description:
Two pairs of barbels on rostral region, one pair on
lower jaw, one pair on posterior end of maxilla; end
of maxilla barbel beyond anal fin origin; pectoral
spine filament long, reaching anal fin origin. Colouration:
Dorsal, pectoral, and pelvic fin membranes black;
anal fin membrane black distally (some individuals
white), white proximally; body silver gray or blue
grey dorsally, silver white ventrally. Habitat:
Chiefly marine, common around river mouths and also
entering river estuaries. Reproduction:
Reproductive season in French Guiana is from May to
November; male incubates the eggs in his mouth until
they hatch; for a few days the newborn (30-40mm) may
hide in the mouth of the male in the presence of danger.
Diet: Feeds on small fishes and invertebrates,
such as crustaceans. Etymology: The
genus and specific name of bagre: meaning
tautonymous with Silurus bagre; according
to Marcgrave (1648), a Portuguese word for catfish
used in Brazil, presumably first applied to B.
bagre. Remarks:
This species is widely distributed where it occurs
in nearshore coastal habitats and estuaries over soft
bottom. Its generation length is estimated as 9.6
yeas. In some parts of Brazil, such as Para State,
there is an intense, targeted fishery for this species.
In Para, there has been a decline of about 47% in
landings over the last 10 years. Other areas within
its range have only limited, artisanal catches. Therefore,
it is listed as Least Concern with a recommendation
to monitor the fisheries off Brazil (IUCN 2015 needs
updating).
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