Flash....Just in: 5/23/10
Rainbow Snakeheads: $25.00
Alternative names: Rainbow Snakehead, Walking Snakehead, Asiatic Snakehead, Smooth-Breasted Snakehead,
Sexing: Mature females will be fuller in the belly, but only significantly when in breeding condition. They are exceptionally difficult to breed in captivity.
Tank compatibility: This is an aggressive fish which doesn't like to be with too many of its own kind. A group can be kept, but only in very large aquariam with plenty of hiding places, and fighting may still occur. Robust fish of similar size should be tolerated by this Snakehead such as large Plecos and larger Synodontis, but with caution. Smaller fish are likely to be eaten.
Diet: Live foods are generally preferred, with the possible exceptions of pellets by some fish, but not all. They eat tubifex worms, bloodworms, crickets, mussels, shrimp, whitebait, and earthworms.
Feeding regime: This species should be fed once a day, they are exceptionally greedy fish.
Environment Specifics: A spacious dimly lit tank with plenty of hiding places is best for this fish. The tank should be mature and well filtered with a secure lid, these fish are known escape artists.
Behaviour: While one of the more peaceful Snakeheads, it's still comparatively aggressive and will not tolerate it's own kind in close quarters.
Identification: A very attractive Snakehead, the body is typical Snakehead in shape, with a broad head and long dorsal and anal fins with a rounded caudal fin. There are several pattern colourations, but it is generally a deep olive in base colour with many iridescent bands and spots across the body and fins in red, blue and green.
South American Lungfish: $20.00
The Dipnoi are a group of sarcopterygiian fish, are are commonly known as the lungfish. Their "lung" is a modified swim bladder, which in most fish is used for buoyancy in swimming, but in the lungfish also absorbs oxygen and removes wastes. Modern lungfish in Africa and South America are able to survive when their pools dry up by burrowing into the mud and sealing themselves within a mucous-lined burrow. During this time, they breathe air through their swim bladder instead of through their gills, and reduce their metabolic rate dramatically. These fish will even drown if they are kept underwater and not allowed to breathe air!
Fossilized lungfish burrows of Gnathorhiza have been found in rocks as old as the Permian, with the lungfish still inside, and older (empty) burrows are known from the Carboniferous and Devonian. The oldest fossil dipnoan is Diabolichthyes, from the Lower Devonian of Yunnan, China. It is not clear whether this particular fish was marine or lived in freshwater like modern lungfish, but both marine and freshwater fossils of other groups are known.