JUL 27, 2002

I AM led to draw a link between the recent stories on snakeheads in Maryland, the United States, and the burgeoning luohan (so-called flowerhorn cichlid) hobby in Singapore.

I harbour no objection to the practice of keeping luohan despite the wealth of superstition surrounding the hobby.

However, I am concerned the impulsive nature of this pursuit is leading to the rampant release of the fish into native waters for various reasons, including a belief that this act earns one 'merit' or 'luck'.

There is ample anecdotal evidence to suggest that this man-made hybrid is becoming an increasingly-common feature of local freshwater habitats, along with other 'invaders' such as the highly piscivorous peacock cichlid (Cichla ocellaris), African tilapia as well as multitudes of guppies and mollies.

Aside from the potentially-negative impact on native biodiversity, I wonder what other ecological disruptions these fishes may cause.

As far as I know, the Agri-Food and Veterinary Authority (AVA) prohibits the release of alien species into Singapore waters.

I wonder if AVA is monitoring the trend?

Perhaps it should come out with a leaflet, distributed at local fish shops, to tell purchasers of luohan and other fishes about the dangers of releasing exotic creatures into local habitats.

MARCUS NG FU CHUAN

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