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Hasemania nana, commonly known as the Copper Tetra or Silvertip Tetra, is a small, active freshwater fish belonging to the family Characidae. It is characterized by its vibrant copper-orange coloration, particularly in males, and a distinctive white or silver tip on its caudal fin. This species is known for its schooling behavior and peaceful disposition, making it a popular choice for community aquariums.
Características físicas
- Formato do corpo
- compressed
- Coloração
- Males exhibit a striking copper-orange to reddish-brown body coloration, intensifying during breeding. A prominent dark, horizontal stripe runs from the operculum to the caudal peduncle, terminating in a distinct black spot. The dorsal, anal, and adipose fins are typically translucent with a reddish tint. The most distinguishing feature is the white or silvery tip on the lobes of the caudal fin. Females are generally duller in coloration, with a more subdued copper hue and a rounder body shape, especially when gravid.
- Tipo de escama
- cycloid
- Posição da boca
- terminal
- Características distintivas
- Vibrant copper-orange body coloration (males), Distinctive white/silver tips on caudal fin lobes, Dark horizontal stripe ending in a caudal spot, Absence of an adipose fin (a key generic characteristic)
- Nadadeira dorsal
- Single, relatively small, positioned mid-body.
- Nadadeira caudal
- Forked, with characteristic white/silver tips on the upper and lower lobes.
- Nadadeira peitoral
- Small, clear, positioned ventrally.
- Nadadeiras características
- Notably lacks an adipose fin, which is present in many other characin species. This is a key diagnostic feature for the genus Hasemania.
Dicas de identificação
Caudal Fin Tips
Look for the prominent white or silvery tips on the upper and lower lobes of the caudal fin. This is the most reliable distinguishing feature.
Body Coloration
Observe the overall copper-orange body color, especially in males. Females are less intensely colored.
Adipose Fin Absence
Confirm the absence of an adipose fin between the dorsal and caudal fins. This differentiates it from many other tetra species.
Lateral Stripe and Spot
Note the dark lateral stripe that extends to a distinct black spot on the caudal peduncle.
Habitat
- Tipo de água
- freshwater
- Profundidade
- Typically found in shallow, slow-moving waters near the banks.
- Ambiente
- Native to clearwater and blackwater streams, tributaries, and small rivers within the coastal drainages of southeastern Brazil. They prefer areas with dense aquatic vegetation, submerged roots, and leaf litter, providing cover and foraging opportunities. The substrate is often sandy or silty.
- Distribuição geográfica
- Southeastern Brazil, specifically in the states of Espírito Santo, Minas Gerais, and Rio de Janeiro. Type locality is the Rio Doce basin.
Informações sobre aquário
- Nível de cuidado: beginner
- Temperamento: peaceful
- Alimentação: omnivore
- Tamanho mínimo do aquário: 60 liters (15 gallons)
- Temperatura: 22-28°C (72-82°F)
- Nível de pH: 6.0-7.5
- Dureza da água: 5-15 dGH
- Compatibilidade: Excellent for community tanks with other peaceful, similarly sized fish such as other small tetras, rasboras, corydoras, and dwarf cichlids. Avoid housing with large or aggressive species that may prey on or bully them.
- Requisitos especiais: Requires a well-planted aquarium with open swimming spaces. Benefits from a dark substrate and floating plants to diffuse lighting, which enhances their coloration and reduces stress. Should be kept in schools of at least 6-10 individuals to exhibit natural schooling behavior and reduce shyness.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: Breeds year-round in suitable conditions, with peak activity often coinciding with rainy seasons in their natural habitat.
- Preço de mercado: Low
- Importância comercial: medium
- Sabor: Not applicable
- Textura: Not applicable
- Valor nutricional: Not applicable
Fatos principais
Adipose Fin Absenceinteresting
Hasemania nana is one of the few characin species that naturally lacks an adipose fin, a small fleshy fin typically found between the dorsal and caudal fins in many other tetras. This is a key characteristic of the genus Hasemania.
Coloration and Breedingbehavior
The vibrant copper-orange coloration of male Copper Tetras intensifies significantly during breeding periods, serving as a visual signal to attract females and establish dominance.
Schooling Behaviorbehavior
These tetras are obligate schooling fish, meaning they thrive and exhibit their most natural behaviors when kept in groups of at least six to ten individuals. This schooling provides security and facilitates social interactions.
Aquarium Popularityinteresting
Despite its relatively recent introduction to the aquarium hobby compared to some other tetras, the Copper Tetra has become a popular choice due to its peaceful nature, striking coloration, and ease of care.
Informações de segurança
Seguro- Nível de segurança: safe
- Venenoso: Não
- Comestibilidade: not recommended
- Observações de manuseio: No specific handling precautions are required beyond standard care for small, delicate fish. Avoid sudden movements or loud noises near the aquarium to prevent startling them.
Espécies similares
Flame Tetra
Hyphessobrycon flammeus
Flame Tetras possess an adipose fin and typically have a more intense red coloration, particularly in the posterior half of the body, without the distinct white caudal fin tips of Hasemania nana.
Serpae Tetra
Hyphessobrycon eques
Serpae Tetras have a deeper, more compressed body, a prominent black shoulder spot, and an adipose fin. Their coloration is typically a deeper red, lacking the copper hue and white caudal tips of the Copper Tetra.
Rosy Tetra
Hyphessobrycon rosaceus
Rosy Tetras have an adipose fin and often display elongated dorsal and anal fins in males. Their coloration is generally pinkish-red, and they lack the specific caudal fin markings of the Copper Tetra.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Characiformes
- Família
- Characidae
- Gênero
- Hasemania
- Espécie
- Hasemania nana
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