field guide to the freshwater fishes of singapore

Index of fishes
General parts of a fish
Kelvin K P Lim and Peter K L Ng
  Family Phallostethidae
Genus Neostethus
photo of whole fish, side view
Photo: Yip Hoi Kee
Priapus Fish
Neostethus lankesteri
Ikan Nampak, name in chinese characters

Euryhaline; 4 cm; oviparous; feeds mainly on zooplankton; gregarious; surface-dwelling.
Indigenous. Some coastal canals and rural streams.

This strange looking fish has its reproductive parts opening at the most unexpected place. The male has a complicated fleshy appendage called the priapium used for reproduction which is suspended just after the head near the gill cover. The urinary, anal and genital openings are here.
close-up photo of head of male
Male Priapus Fish
The female opening is between the pectoral fins.
Freshwater habitats
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