Hoplosternum

Hoplosternum is a small genus of freshwater catfish in the Callichthyinae subfamily of the armored catfish family.

"Cascadura" redirects here. For the neighborhood in Rio de Janeiro, see Cascadura, Rio de Janeiro.

Hoplosternum
Temporal range: Middle Miocene - Recent
Hoplosternum littorale
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Siluriformes
Family: Callichthyidae
Subfamily: Callichthyinae
Genus: Hoplosternum
T. N. Gill, 1858
Type species
Callichthys laevigatus
Synonyms
  • Cascadura
    Ellis, 1913
  • Cataphractops
    Fowler, 1915
  • Ellisichthys
    Miranda Ribeiro, 1920
  • Diasternum
    Franz, 2001

A fossil catfish has been identified as Hoplosternum sp. from the middle Miocene in the La Venta formation, Magdalena River basin, Colombia.[1]

Taxonomy

The name Hoplosternum is derived from the Greek hoplon (weapon) and sternon (chest).[2]

Species

There are currently three described species in this genus:[2]

Distribution

Hoplosternum species are found in tropical Central and South America especially in Guyana.

It is called "Hassa" by the locals.

Ecology

Hoplosternum is normally found in large schools on the muddy bottoms of slow-moving rivers, pools, drainage ditches, and swampy areas. In water with low oxygen content, the fish are capable of utilizing atmospheric air by taking in a gulp of air at the surface of the water and passing it back to the hind gut. The walls of the gut are lined with tiny blood vessels into which the oxygen from the air can pass, similar to the function of true lungs. The remaining gasses pass out through the anus. When there is a severe drought, these air breathers are able to traverse short stretches of land seeking better conditions. The fish is also capable of making sounds; both grunts and squeaks.

Like other callichthyines, Hoplosternum species build bubble nests. Among callichthyines, H. littorale has the most complex nest structure.[3]

Reproduction

Hoplosternum is a builder of bubblenests from plant parts, some bottom materials, and bubbles formed by a mouth secretion and air. The male forms a mass of bubbles about 20 cm (8 in.) in diameter and 10 cm (4 in) high. During the time of construction, the female is actively chased away or ignored. When the nest construction is complete, the male will accept the female. The eggs (up to several hundred) are deposited into the nest and the male or the pair will actively protect the nest for about four weeks until the fry come out of the nest at the size of 2.5 cm (1 in).

Cuisine

Hoplosternum is also known by the nickname "Hassa" in Guyana and other parts of South America. It is called "Cascadoux" in Trinidad and Tobago. It is normally served curried with rice or pigeon peas.

gollark: ```sqlCREATE TABLE links ( uid INTEGER PRIMARY KEY, from TEXT NOT NULL, to TEXT NOT NULL, linkText TEXT NOT NULL, context TEXT NOT NULL );```I won't* come to regret defining links this way!
gollark: *I* could take some time out of my busy minoteaur-making schedule to make macron, I suppose.
gollark: Interesting. Why?
gollark: ubq is going to make *both* to mock you.
gollark: ubq, *your* arbitrary input on this arbitrary and nigh-meaningless technical choice?

References
  1. Ferraris, Carl J. Jr. (2007). "Checklist of catfishes, recent and fossil (Osteichthyes: Siluriformes), and catalogue of siluriform primary types" (PDF). Zootaxa. 1418: 1–628. Retrieved 2009-06-25.
  2. Froese, Rainer and Pauly, Daniel, eds. (2011). Species of Hoplosternum in FishBase. December 2011 version.
  3. Andrade, D. V.; Abe, A. S. (1997). "Foam nest production in the armoured catfish". Journal of Fish Biology. 50 (3): 665–667. doi:10.1111/j.1095-8649.1997.tb01957.x.
  • Burgess, Dr. Warren E. (1987). A Complete Introduction to Corydoras and Related Catfishes. Neptune City, NJ: T.F.H. Publications. ISBN 0-86622-264-2.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.