As a complete contrast to the smallish fish that have been described so far, we come to the giant bat fish. This fish, although often acquired at2.5-7.5cm (1-3in) long, will grow prodigiously, even in an aquarium and very soon reaches 25-30cm (10-12in) in size, being tall rather than long. It is one of the few fish that actually outgrows its immediate environment, and many autarkists are faced with the problem of either buying another tank or part-exchanging their rapidly expanding fish. Bat fish like to 'rule' a tank by swimming unhindered in the open spaces and as long as other fish do not challenge this right of way, bat fish are normally content to live with any other fish, from small gobies up to larger groupers and triggers. However, choosing tank mates can be problem.Bat fish are normally bought when small and at that size the yare very vulnerable and can soon end up quite battered, since their only natural protection seems to be their intimidating adult size. Obviously batfish will only grow if they are sufficiently well-fed - they are constantly hungry and seemingly greedy fish that eat virtually anything. Unfortunately, this includes most invertebrates, including supposedly poisonous species such as anemones.
The round fin bat fish (Platelayer, it is the size of a plate. The orbicular is) - here with a cleaner long-finned batfish (Plat ax Tierra) is wrasse - starts off like an autumn leaf also striking as a juvenile. It’s long, drifting in the current. A few months flowing fins seem to shorten as it ages. Bat fish is generally found in Indo Pacific, Philippines etc.
