Resembling or relating to characin fish in appearance or characteristics.
From Characidae with the Greek suffix '-oid' meaning resembling or having the form of, allowing comparison to characin traits without necessarily being a true member of the family.
The '-oid' suffix is how scientists say 'looks like it but maybe isn't'—like humanoid robots or asteroid rocks. A characinoid fish has that characin vibe without the official family membership.
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