Ariidae family is not that well covered in online
literature so I thought "why not" so I have
hand picked a species that you would not keep in your
home aquarium due to its adult size and migratory
habits, The Pemecou sea catfish, Sciades herzbergii.
This species may
be confused with Sciades
couma, although it
is much more frequent than S. couma. 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. Feed on
a large variety of bottom-living and pelagic organisms
including those found among the roots of mangroves.
species is widely distributed and can be very common.
It is a 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 history. (The
IUCN Red List of Threatened Species 2015).
commonly occurs in turbid estuaries, mangrove-lined
lagoons and lower parts of rivers. It is very tolerant
of changes in salinity, also occurring in hypersaline
waters and occasionally shallow marine waters.
The spines of
this species are poisonous and may inflict painful
wounds that sometimes result in long-lasting effects.
and Atlantic draining rivers and estuaries from Colombia
to Brazil: Brazil, Colombia, French Guiana, Guyana,
Suriname and Venezuela. Habitat:
57.0cm TL (22½ins)
Presence of a furrow, partly
covered by a flap of skin, extending across the snout
between the posterior nostrils; snout long and rounded,
mouth slightly inferior; supra-occipital process slightly
keeled; usually 21-23 gill rakers on second arch,
palatine teeth patch always with an U-form; medium
sized species; soft rays in pectoral fins usually
10 or 11.
Grey colour to dark brown above,
whitish below. All fins
have a touch of red/pink.
Care and Compatibility
Grows too large for the home
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.
Fishes, worms, pelagic micro-crustaceans,
benthic shrimps and detritus.
Structure on the upper portion of the gill arches. Palatine teeth: The
teeth present on the palatine bone which lies laterally
in the roof of the mouth.
The paired fins just behind the head. Supra-occipital
process: Unpaired bone at the back of the skull,
usually with a crest.
R., Marceniuk, A.P., Giarrizzo, T. & Fredou,
F.L. 2015. Sciades herzbergii. The IUCN Red List of
Threatened Species 2015. 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 ). Mol, H.A.
Jan, The Freshwater Fishes of Suriname. BRILL,
Leiden Boston, 2012. 889 p.