The Cardinal Tetra in Its Natural Habitat

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Cardinal tetra (Paracheirodon axelrodi) , Stock Video

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Cardinal Tetra - Paracheirodon axelrodi

Cardinal Tetra - A Complete Care Guide - AquariumStoreDepot

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Tetras Care Guide

Would it be fine to keep just four cardinal tetras in my tank even though it's suggested to keep at least six? - Quora

Cardinal tetras in Nature (Paracheirodon axelrodi)