05-03-2012, 11:49 AM
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I agree more floating plants are needed to reduce that light, but the Water Sprite especially will spread once it is settled, so the lack of adequate cover now will soon resolve itself.
And this will help the fish.
Characins should be like this, depending upon species. Males will challenge each other, and drive the females particularly when they know she is ready to spawn [those pheromones again]. Also, in new surroundings it is naturally for fish to over-react, although sometimes it is the opposite and they hide. That too should settle. But this is a somewhat active species, I have maintained them and they spawned many times, I even had a few fry survive in the plants. When they are ready to actually spawn, the male will drive the female into plants.