Fish Expert - Al Castro

High Summer Temperatures
The difficulty is not in the fishes' inability to withstand the temperature, but rather in the side effects of the higher temperatures.

Cloudy Water
Unless the water is green in color, the problem is most likely a bacterial bloom.

Green Spots on Tank Glass
What is this, and what can I do to remove this unsightly problem from my aquarium?

Keeping the Water Clear
Is the tank overcrowded?

When to Use Test Kits
I am not sure if it is worth the money and trouble to test the water.

White Build-Up on Glass
You are probably correct in your assumption that the white build-up is lime (calcium carbonate).

Breeding Dwarf Gouramis
How can I tell the sex between dwarf gouramis?

Breeding "Freshwater" Eels
Most publications I have read indicate that these eels are not known to have bred in captivity. Is this true?

Breeding Tetras
Ten steps to breeding tetras.

Breeding Tinfoil Barbs
I have heard that these fish cannot be bred in captivity.