Ritidae
Ritidae | ||||||||||||
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Rita rita |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Ritidae | ||||||||||||
Ng , 2003 |
The Ritidae are a family of South and Southeast Asian catfish with 13 species that are divided into two genera, namely Rita and Nanobagrus . The taxon only got the family status in 2016 in the 5th edition of Fishes of the World , a standard work on fish systematics, and was previously considered a subfamily of the spiny catfish (Bagridae). The spiny catfish belong to a group of closely related Asian catfish families called "Big Asia", while the Ritidae may be the coral catfish(Plotosidae) that do not belong to the “Big Asia” group. The Ritidae occur in South Asia, Indochina , Borneo and Sumatra .
features
The species of the genus Rita are medium-sized to very large catfish that can be 20 cm to 2 meters long. The spines of its pectoral and dorsal fin are large and well developed, and the eyes are dorsolateral. The species of the genus Nanobagrus remain very small with lengths of 3 to 5 cm. In both genera the anal fin is short and the caudal fin is forked. The pelvic fins have 7 to 8 fin rays, the anus and genital opening are close together, the posterior extension of the shoulder girdle is rudimentary. In the spiny catfish, on the other hand, the pelvic fins have 6 fin rays, the anus and genital opening are not close together, and the posterior extension of the shoulder girdle is well developed.
Genera and species
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Rita Bleeker, 1854
- Rita bakalu Lal et al., 2016
- Rita Chrysea Day, 1877
- Rita gogra (Sykes, 1839)
- Rita kuturnee (Sykes, 1839)
- Rita macracanthus Ng, 2004
- Rita rita (Hamilton, 1822)
- Rita sacerdotum Anderson, 1879
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Nanobagrus Mo, 1991
- Nanobagrus armatus (Vaillant, 1902)
- Nanobagrus fuscus (Popta, 1904)
- Nanobagrus immaculatus Ng, 2008
- Nanobagrus lemniscatus Ng, 2010
- Nanobagrus nebulosus Ng & Tan, 1999
- Nanobagrus stellatus Tan & Ng, 2000
- Nanobagrus torquatus Thomson, López, Hadiaty & Page, 2008
literature
- Joseph S. Nelson , Terry C. Grande, Mark VH Wilson: Fishes of the World. John Wiley & Sons, 2016, ISBN 978-1118342336 .