Como identificar Dwarf Pencilfish

Para identificar Dwarf Pencilfish (Nannostomus marginatus), observe estas características principais.

Características físicas

Formato do corpo

elongated

Coloração

The body is typically a light brown to golden-yellow base color. A prominent, broad, dark brown to black lateral stripe runs from the snout through the eye to the caudal peduncle. Above this, a thinner, often reddish or golden stripe is present. The belly is usually whitish. Fins are generally hyaline (clear) but can show hints of red or orange, especially in males. Males tend to be more intensely colored and slender than females.

Tipo de escama

cycloid

Posição da boca

superior

Características distintivas

Three distinct horizontal stripes: a broad dark lateral stripe, a thinner lighter stripe above it, and a faint stripe along the dorsal midline., Small size, typically reaching only 2.5-3.5 cm (1-1.4 inches) in total length., Pointed snout and small, upturned mouth.

Nadadeira dorsal

Small, located mid-body, often with a reddish or orange spot.

Nadadeira caudal

Forked, with the upper and lower lobes sometimes showing reddish coloration.

Nadadeira peitoral

Small and transparent, positioned low on the body.

Nadadeiras características

Adipose fin is absent, a characteristic of the Lebiasinidae family. All fins are relatively small and delicate.

Dicas de identificação

1. 1

   Size and Shape

   Look for a very small, slender, torpedo-shaped fish, typically under 3.5 cm (1.4 inches) in length.

2. 2

   Stripe Pattern

   Identify the three distinct horizontal stripes: a prominent broad dark stripe along the flank, a thinner lighter stripe above it, and a faint dorsal stripe. This pattern is key to distinguishing it from other Nannostomus species.

3. 3

   Mouth Position

   Observe the small, upturned mouth, indicative of its surface-feeding habits.

4. 4

   Fin Coloration

   Note any reddish or orange coloration in the fins, particularly the dorsal and caudal fins, which is more pronounced in males.

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