Como identificar Lápis Prata

Para identificar Lápis Prata (Nannostomus beckfordi), observe estas características principais.

Características físicas

Formato do corpo

elongated

Coloração

The body is typically golden to reddish-brown dorsally, fading to a lighter, sometimes silvery, ventral surface. A distinct dark, often black or dark brown, lateral stripe runs from the snout through the eye to the caudal peduncle, sometimes extending into the caudal fin. Fins are generally hyaline, though males can display reddish or yellowish tints, especially in the anal and caudal fins. During breeding, males intensify their coloration, often showing iridescent scales.

Tipo de escama

cycloid

Posição da boca

superior

Características distintivas

Slender, torpedo-shaped body, Prominent dark lateral stripe, Small, upturned mouth, Males often more intensely colored with a pointed anal fin

Nadadeira dorsal

Small, located mid-body, typically with 2 unbranched and 7-8 branched rays.

Nadadeira caudal

Forked, with 10-12 principal rays.

Nadadeira peitoral

Small, located ventrally, with 1 unbranched and 9-10 branched rays.

Nadadeiras características

Adipose fin absent. Anal fin in males is often more pointed than in females, with 2 unbranched and 7-8 branched rays.

Dicas de identificação

1. 1

   Body Shape and Size

   Elongated, slender body, typically reaching a maximum standard length of 3.5-4.0 cm (1.4-1.6 inches).

2. 2

   Coloration and Markings

   Golden to reddish-brown body with a distinct, dark (black to dark brown) lateral stripe running from the snout to the caudal fin. This stripe is a key identifier.

3. 3

   Mouth Position

   Small, upturned mouth, adapted for feeding on surface insects and small invertebrates.

4. 4

   Fin Morphology

   Absence of an adipose fin. Males often have a more pointed anal fin and more vibrant coloration, especially during breeding.

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