Kelvin K P Lim and Peter K L Ng
Euryhaline; 7 cm; ovoviviparous; carnivorous; gregarious; surface-dwelling. Indigenous, common. Forest and rural streams, reservoirs and mangrove streams.
Males may or may not have a red blotch on the dorsal fin, and as in guppies, the front portion of the anal fin is modified into a gonopodium to facilitate internal fertilisation. Young are also born alive. The males tend to get pugnacious towards one another, and in Thailand, it is used as a kind of "low grade fighting fish". It can be separated from the Forest Halfbeak by its smaller size, and having the dorsal fin beginning just behind that of the anal fin.
Fishes in Singapore
Amazing Fishy Facts
About the guidebook
From A Guide to Common Freshwater Fishes of Singapore by Kelvin K P Lim and Peter K L Ng
Published by the Singapore Science Centre and sponsored by BP
@Raffles Museum of Biodiversity Research and Singapore Science Centre