modified, fluorescent fish known as GloFish.

In the aquarium

Behavior

Rainbow sharks are tank-bottom and aquarium-surface cleaners. Being bottom- and mid-level dwellers, they consume leftover fish food, but also eat the algae growing off surfaces. They are generally peaceful with their own kind in the wild, but they can become aggressive with each other if kept in a tank. Threat displays and fighting are likely to occur. This fighting behavior involves head-and-tail butting, and also

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