I have 7 tiger barbs, 3 denison barbs, 1 red-tail shark, and a spotted pleco in a 55 gal (4ft X 1ft). Occasionally, a couple tiger barbs swim in place (in a plant) vertically with their noses pointed staight down - and they sort of seem to be shivering like they're cold. Is this normal behavior for tiger barbs? Also, my denison barbs seem to have started some sort of game - most of the fish in the tank will skip or brush the back of their heads off the filter tube that hangs down into the tank or off the gravel or ornaments. They look like they are trying to scratch their heads or something. I checked for ick, but they seem to be ok. Is this merely a game they're playing, or could something be wrong with them? Any knowledge on the topic will be greatly appreciated...
2007-03-26
12:32:08
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3 answers
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asked by
Kieko
1