Como identificar Blind Cave Tetra

Para identificar Blind Cave Tetra (Astyanax jordani), observe estas características principais.

Características físicas

Formato do corpo

torpedo

Coloração

Pinkish-white to translucent, lacking pigmentation (albinistic or depigmented). Internal organs may be visible through the skin.

Tipo de escama

cycloid

Posição da boca

terminal

Características distintivas

Absence of functional eyes (eyes are vestigial or completely absent, covered by skin), Lack of pigmentation (albinism), Prominent lateral line system with enlarged neuromasts, Well-developed chemosensory abilities, Small, conical teeth

Nadadeira dorsal

Single dorsal fin, typically with 10-11 rays.

Nadadeira caudal

Forked caudal fin, symmetrical.

Nadadeira peitoral

Paired pectoral fins, typically with 11-12 rays.

Nadadeiras características

Adipose fin present, characteristic of Characidae.

Dicas de identificação

1. 1

   Eyes

   Completely blind, with eyes either absent or vestigial and covered by skin. This is the most defining characteristic.

2. 2

   Coloration

   Lacks pigmentation, appearing pinkish-white or translucent due to the absence of melanin.

3. 3

   Lateral Line

   Observe the lateral line system, which is often more pronounced and sensitive in cave-dwelling forms.

4. 4

   Habitat

   If encountered in its natural environment, its presence in a dark cave system is a strong indicator.

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