Water flow & spawning

[Pete Johnson <petej@wordsanddeeds.com>]

This weekend a pair of Taenacara candidi spawned in one of my tanks. 
These fish have lived in this 15-gallon tank for more than 6 months with 
no spawning activity. Last week I attacked the grunge in the tank with a 
Marineland HOT filter, which claims 250 gph circulation. This ran on the 
tank for a few hours. I also did two water changes in a two-day period. 
Normal filtration is from a pair of corner sponge filters.

Something stimulated the spawning. Water changes are an obvious 
possibility, though I regularly change their water. I wonder if they 
responded to the increased water flow in the tank?

Most of my tanks are equipped with sponge filters, which create 
negligible current. Have others noticed that some species of fish respond 
to increased water movement in their tanks?


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Pete Johnson  /  San Jose, CA  /  petej@wordsanddeeds.com
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