First description: Gunther, A. 1861
Catalogue of the Acanthoperygian Fishes in Collection of the British Museum.,
London Vol.3.; pp.476
Diagnostic: This incomplete description was based on a single
specimen in a collection by M.Mouhot. Subsequently, several authors cited
Gunther's original description, until
revealed that either the
explanation was that it really is a rare species or it was the failure of
collectors to distinguish it from other similar Snakeheads.
Meristic: D: 42 A: 27 C: 21 V: present Ratio: 3.4
In his study of the 'Freshwater Fishes of Siam, or Thailand',
Hugh. M. Smith (1945),
recruited the help of Dr.Ethelwynn Trewavas (Department of Fishes, British Museum.)
to examine the peculiarities of the lateral line. Aside from differences between
each side, it was found the lateral line became displaced between the 15th and
20th scale from the head.
All fins are clear with oblique blackish spots. The body colour is a greenish-olive.
The upper and lower parts have a series of alternate darker blotches and the mid-
section, a light longitudal band that runs from the eye to middle of caudal fin.
There are also 'darker streaks along the series of scales' (
The head has three oblique brown stripes on the side, while on the lower
part it is blackish, with white spots.
Size: 185 mm
Synonyms: Ophiocephalus siamensis
Geographical location: Siam (Thailand),
records this species from Vietnam, but this is highly unlikely.