Cat-eLog Right Arrow Callichthyidae Right Arrow Callichthyinae Right Arrow The genus Hoplosternum

Down arrow Summary of Hoplosternum
Pronounced hop low STERN um
Etymology Hoplosternum: From the Greek hoplon, meaning shield and sternum, meaning breast; in reference to the prominent coracoid bones on the breast.
Sexing In Dianema, Hoplosternum and Megalechis (but not in Callichthys), medial expansions of the coracoid bones are especially developed, covering most of the skin between the pectoral fins and sometimes overlapping in the midline in fully developed mature males (vs. not fully covering the abdominal skin and not overlapping in females). Mature males of Callichthys, Dianema, Hoplosternum, Lepthoplosternum, and Megalechis have a thick adipose body on the ventral surface of the pectoral fin. Mature females of Dianema, Hoplosternum and Megalechis have a small fold of skin on the external face of the leading pelvic-fin ray.
Size Smallest 77mm, largest 210mm, average 127mm, most commonly 210mm. All SL.
Species There are 3 "species" in the database
Keepers 3 species (100%) are being kept by registered keepers
New spp. / time
1750 1770 1790 1810 1830 1850 1870 1890 1910 1930 1950 1970 1990 2010 
Down arrow Most Kept Species
1. Hoplosternum littorale (67.69%)
2. Hoplosternum punctatum (26.15%)
3. Hoplosternum magdalenae (6.15%)
Down arrow Genus Thumbnails
Down arrow Distribution of selected Hoplosternum species

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