This species may be confused
with Sciades couma, although it is much more
frequent than S.
Adults occur in turbid estuaries, mangrove-lined lagoons
and lower parts of rivers being very tolerant to changes
in salinity. Found on shallow soft bottoms. Diet:
Feeds on a large variety of bottom-living and pelagic
organisms including those found among the roots of
mangroves. Reproduction: Occurs between
September and December. A female lays 20-30 eggs,
with a diameter of 10-12 mm. Males incubate the eggs
in their mouth. Females reach maturity at a younger
age than males and grow faster. The male incubates
28-40 eggs in the mouth and 200-400 eggs that are
fixed in a glutinous mass on its head. Incubation
takes 10-12 days. After 50-60 days fully functional
young (6-6.5 cm TL) are released. Aquarium
Care: Grows too large for the home aquarium.
This species is widely distributed and can be very
common. It is targeted species in artisanal fisheries,
principally in the north and northeast of Brazil.
It may be susceptible to habitat loss in mangrove,
estuarine areas. At present neither habitat loss or
fishing pressure is considered a major threat to this
species. It is listed as Least Concern with a recommendation
to monitor its fished population and study its life
Caribbean and Atlantic draining rivers and estuaries
from Colombia to Brazil: Brazil, Colombia, French
Guiana, Guyana, Suriname and Venezuela. Habitat:
97.0cm TL (39ins)
Chacon, J.O., M.I.M.
Alves and M.S.C. de Mesquita,
1994. Alguns aspectos da reprodução
do bagre branco, Selenapsis herzbergii (Bloch 1794),
Pisces: Ostariophysi, Siluriformes, Ariidae. Bol.
Tec. DNOCS. 47/52(1/2):43-78. Froese, R. and D. Pauly. Editors.
2015. FishBase. World Wide Web electronic publication.
www.fishbase.org, ( 08/2016 ). Betancur, R., Marceniuk, A.P., Giarrizzo,
T. & Fredou, F.L. 2015. Sciades herzbergii.
The IUCN Red List of Threatened Species 2015.