Fishes of the World by Joseph S. Nelson & Terry C. Grande & Mark V. H. Wilson

Author:Joseph S. Nelson & Terry C. Grande & Mark V. H. Wilson [Nelson, Joseph S.]
Language: eng
Format: azw3
ISBN: 9781119220824
Publisher: Wiley
Published: 2016-04-24T16:00:00+00:00

Subfamily Luciocephalinae

Freshwater; Malay Peninsula and Archipelago. Five branchiostegal rays (most members of this family have six, but the first has been lost in this clade; Britz, 2001). This is the “spiral egg” clade (Britz, 2001; Rüber et al., 2006).

In Nelson (1994), Luciocephalus (Pikehead) was recognized in its own family, and the others were placed in the subfamily Trichogastrinae (gouramies) of the family Belontiidae. Luciocephalus is quite distinctive in having the following characters: no dorsal or anal-fin spines; dorsal fin inserted posteriorly, with 9–12 rays; anal fin with a deep notch and 18 or 19 rays; pelvic fin with one spine and five soft rays (one of which is produced into a thread-like ray); caudal fin rounded; lateral-line scales about 40–42; mouth exceptionally protractile; gill membranes not united; median gular element present; no swimbladder; maximum length about 18 cm.

Five genera, Ctenops (1), Luciocephalus (in figure) (2), Parasphaerichthys (2), Sphaerichthys (4), andTrichopodus (4), with 13 species.

Subfamily Luciocephalinae. Freshwater; southern Asia. A clade distinct from Luciocephalinae with two monophyletic genera (Britz, 2001; Rüber et al., 2006).

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