Portal:Fish/Did you know/Archive

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'"Did you know..."'

• that tuna and some species of sharks are warm-blooded, and able to raise their body temperature significantly above that of the ambient water surrounding them.

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  that Ichthys is a symbol resembling a fish, used by early Christians as a secret symbol and is now known colloquially as the "Jesus fish." Ichthus (ΙΧΘΥΣ, Greek for fish) is an acronym to "Jesus Christ God's Son is Saviour."

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• that GloFish is a trademarked brand of genetically modified (GM) fluorescent zebrafish with bright red, green, and orange fluorescent color. It is the first genetically modified animal to become publicly available as a pet.

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  that about 20 of the Lake Tanganyika's cichlid species use abandoned shells for safety and breeding. They are known as the shell dwellers