Fish Coloration Terms and Definition - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 1 Old 01-19-2007, 07:19 AM Thread Starter
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Fish Coloration Terms and Definition

Hi all.

Another topic worth learning. Thanks to a member of the other forum who helped me with the pics.:) Use the thread very well.

Albino: Lacking pigment.

Amelanistic: lacking melanin (black pigment).

Aposematic: Warning coloration.

Chromophores: Cells responsible for holding pigment.
Xanthophores: produce yellow pigment.
Erythrophores: produce red pigment.
Melanophores: produce black pigment (melanin).
Iridophores: Hold no color pigment but, hold highly reflective non-motile purine crystals that yield silver irridescent reflections.
Leucophores: Hold no color pigment. Motile purine crystals produce white pigment.
Cyanophores: produce blue pigment.

Erythristic: Predominantly red morph.

Flavistic: Sepia-toned background color.

Leucistic: lacking or mostly lacking chromatophores. Not a true albino (ie: colored eyes).

Melanistic: dark or near black (some markings can still be visible).

Piebald: Having patches of white.

Polymorphic: Having a natural variation within a single species. (eg: blue motoro ray is a polymorph of the standard non-blue motoro ray)

Tyrosinase-Negative Albinism: An albino whose cells lack tyrosinase (enzyme that synthesizes melanin) yielding a pale-white to creamy animal with pink eyes.

Tyrosinase-Positive Albinism: Synthesizes tyrosinase but, not melanin yielding a fawn or lavender (platinum) color.

Xanthic: Predominantly yellow color morph.

If anything, pls let me know if there is something missing or to add.:)

Good day.

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