Predatory tetra
| Predatory tetra | ||||||||||||
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Hoplias malabaricus |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Erythrinidae | ||||||||||||
| Richardson , 1856 |
The predatory tetra (Erythrinidae) are a family of South American predatory fish.
features
The fish are 15 centimeters to one meter long. Its body is cylindrical, the scales relatively large. There are 32 to 47 scales along the sidelines . The dorsal fin is located in front of the anal fin , usually above the pelvic fins . One adipose fin is missing, the caudal fin is rounded. The pectoral fins have relatively few, only 9 to 14 fin rays , the anal fin 10 to 12. The dorsal fin is supported by 8 to 15 fin rays, three more are only rudimentarily developed. The palatine bone is covered with numerous teeth.
The fish take care of their brood and lay their eggs in nests. Some representatives can breathe air and crawl short distances across land.
Genera and species
There are three genera with 19 species:
- Genus Erythrinus Scopoli, 1777
- Erythrinus erythrinus (Bloch & Schneider, 1801)
- Erythrinus kessleri Steindachner, 1877
- Genus Hoplerythrinus Gill, 1896
- Hoplerythrinus cinereus (Gill, 1858)
- Hoplerythrinus gronovii (Valenciennes, 1847)
- Hoplerythrinus unitaeniatus (Spix & Agassiz, 1829)
- Genus Hoplias Gill, 1903
- Hoplias aimara (Valenciennes, 1847)
- Hoplias argentinensis Rosso et al., 2018
- Hoplias australis Oyakawa & Mattox, 2009
- Hoplias brasiliensis (Spix & Agassiz, 1829)
- Hoplias curupira Oyakawa & Mattox, 2009
- Hoplias intermedius (Günther, 1864)
- Hoplias lacerdae Miranda Ribeiro, 1908
- Hoplias malabaricus (Bloch, 1794)
- Hoplias mbigua Azpelicueta et al., 2015
- Hoplias microcephalus (Agassiz, 1829)
- Hoplias microlepis (Günther, 1864)
- Hoplias misionera Rosso et al., 2016
- Hoplias patana (Valenciennes, 1847)
- Hoplias teres (Valenciennes, 1847)
literature
- Joseph S. Nelson : Fishes of the World , John Wiley & Sons, 2006, ISBN 0-471-25031-7 .
- OT Oyakawa, GMT Mattox: Revision of the Neotropical trahiras of the Hoplias lacerdae species-group (Ostariophysi: Characiformes: Erythrinidae) with descriptions of two new species . In: Neotropical Ichthyology . 7, No. 2, 2009. doi : 10.1590 / S1679-62252009000200001 .
Web links
- Raubsalmler on Fishbase.org (English)