Tiger bass

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Tiger bass
Datnioides microlepis

Datnioides microlepis

Systematics
Acanthomorphata
Spinefish (Acanthopterygii)
Perch relatives (Percomorphaceae)
Order : Surgeonfish (Acanthuriformes)
Family : Lobotidae
Genre : Tiger bass
Scientific name
Datnioides
Bleeker , 1853

The tiger perches ( Datnioides ) are a genus from the group of perch relatives (Percomorphaceae). Their habitat is the fresh and brackish water of the estuaries and coastal lakes from India to Borneo .

features

The fish only have 24 vertebrae. The hard-radiating part of the dorsal fin has 12 fin rays , the soft-rayed part 15 to 16. Together with the anal fin, which is also sitting far back, and the round caudal fin, the impression of three caudal fins results. Ploughshare and palatine bone are toothless. There are five species that grow to be 12 to 18 inches long. As predatory fish, they feed on small fish.

Systematics

The genus Datnioides was introduced in 1853 by the Dutch ichthyologist Pieter Bleeker . In most classifications they are assigned to their own family, the Datnioididae. Tiger perches, three-tailed perches ( Lobotes ) and the genus Hapalogenys , which used to be part of the sweetlips and grunts family (Haemulidae), are closely related. In Joseph S. Nelson's Fishes of the World , a standard work on fish systematics, Datnioides and Lobotes form the family Lobotidae , which was introduced in 1861 by the American ichthyologist Theodore Nicholas Gill .

The Australian ichthyologists Anthony Gill and Jeffrey M. Leis also introduced Hapalogenys into the Lobotidae in October 2019 . At the same time they put the Lobotidae in the order of the surgeon fish-like (Acanthuriformes). The Lobotidae share a unique trait (a synapomorphism ) with the rest of the surgeonfish , which was used to diagnose the order. In the larvae and adult specimens of the Lobotidae and the other surgeonfish species, the regrowing teeth grow on the outside of the jaw and replace their predecessors in groups.

Datnioides polota , the type species of the genus

species

There are five species of tiger bass:

Individual evidence

  1. ↑ Jeffrey M. Leis & Anthony C. Gill: Tigerfishes, Tripletails, and Velvetchins form a clade: Morphological evidence from adults and larvae. “International Symposium on Systematics and Diversity of Fishes” on March 3-4, 2008 at the National Museum of Nature and Science, Tokyo
  2. ^ Joseph S. Nelson, Terry C. Grande, Mark VH Wilson: Fishes of the World. Wiley, Hoboken, New Jersey, 2016, ISBN 978-1118342336 , p. 503 et al. 504
  3. ↑ Anthony Gill & Jeffrey M. Leis (2019): Phylogenetic position of the fish genera Lobotes, Datnioides and Hapalogenys , with a reappraisal of acanthuriform composition and relationships based on adult and larval morphology. Zootaxa, 4680 (1): 1-81. DOI: 10.11646 / zootaxa.4680.1.1
  4. ↑ Datnioides on Fishbase.org (English)