Lápis Prata

Descrição

Nannostomus beckfordi, commonly known as Lápis Prata or Golden Pencilfish, is a small, elongated freshwater fish belonging to the family Lebiasinidae. It is characterized by its slender body, often displaying a golden to reddish-brown coloration with a prominent dark lateral stripe extending from the snout to the caudal fin. Sexual dimorphism is present, with males typically exhibiting more intense coloration and a more pointed anal fin.

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

Habitat

Tipo de água

freshwater

Profundidade

Typically found in shallow, slow-moving waters near the surface.

Ambiente

Inhabits small streams, tributaries, and flooded forest areas, particularly those with dense vegetation, leaf litter, and submerged roots. They prefer clear to blackwater environments with soft, acidic water. Often found among aquatic plants like Cabomba, Myriophyllum, and various floating plants, which provide cover and foraging opportunities.

Distribuição geográfica

Native to South America, specifically the Guianas (Guyana, Suriname, French Guiana) and parts of the Amazon basin in Brazil and Venezuela. Its distribution includes the Essequibo, Corantijn, Maroni, and Oyapock river systems.

Informações sobre aquário

• Nível de cuidado: beginner
• Temperamento: peaceful
• Alimentação: omnivore
• Tamanho mínimo do aquário: 30 liters
• Temperatura: 22-28 °C
• Nível de pH: 5.5-7.5
• Dureza da água: 2-15 dGH
• Compatibilidade: Excellent for community tanks with other peaceful, small fish. Avoid housing with large or aggressive species.
• Requisitos especiais: Prefers a well-planted aquarium with subdued lighting and areas of open swimming space. A dark substrate can enhance their coloration. They are schooling fish and should be kept in groups of at least 6-10 individuals to reduce stress and encourage natural behavior.

Informações no ambiente natural

• Estado de conservação: least concern
• Sazonalidade: Breeding typically occurs during the rainy season in their natural habitat, when water levels are higher and food is more abundant.
• Preço de mercado: Low to moderate
• Importância comercial: medium
• Sabor: Not typically consumed due to small size.
• Textura: Not typically consumed due to small size.
• Valor nutricional: Not typically consumed due to small size.

Fatos principais

Espécies similares

Classificação científica

Reino

Animalia

Filo

Chordata

Classe

Actinopterygii

Ordem

Characiformes

Família

Lebiasinidae

Gênero

Nannostomus

Espécie

Nannostomus beckfordi

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