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Geophagus brasiliensis, commonly known as the Pearl Cichlid or Acará, is a South American cichlid species renowned for its attractive coloration and relatively peaceful demeanor within its genus. It is a medium-sized cichlid characterized by an oval, moderately compressed body and a distinctive pattern of iridescent spots and a prominent lateral blotch. This species exhibits a fascinating array of behaviors, including substrate sifting and biparental care of its offspring. It is a popular choice among aquarists due to its hardiness and engaging social interactions.
Características físicas
- Formato do corpo
- compressed
- Coloração
- Variable, typically a grayish-brown to olive-green base color, adorned with numerous iridescent blue, green, or gold spots across the body and fins. A prominent dark blotch is usually present on the flank, often surrounded by lighter coloration. Fins are often edged with red or orange. Breeding males exhibit more intense coloration and may develop a nuchal hump.
- Tipo de escama
- ctenoid
- Posição da boca
- terminal
- Características distintivas
- Iridescent spots covering the body and fins, Prominent dark lateral blotch, Substrate sifting behavior, Often develops a nuchal hump in mature males
- Nadadeira dorsal
- Long, extending almost the entire length of the back, with 13-16 spines and 9-12 soft rays. Often has a reddish or orange margin.
- Nadadeira caudal
- Rounded to slightly emarginate, often with iridescent spots.
- Nadadeira peitoral
- Relatively small and rounded.
- Nadadeiras características
- Pelvic fins are elongated, especially in males, and often have a reddish hue.
Dicas de identificação
Coloration and Pattern
Look for the distinctive iridescent spots (blue, green, gold) scattered across the body and fins, along with a prominent dark lateral blotch. The base color can vary from grayish-brown to olive-green.
Body Shape
Moderately compressed, oval body shape, typical of many cichlids.
Mouth and Feeding Behavior
Observe its feeding behavior; Geophagus brasiliensis is a classic 'earth-eater' and will frequently sift through sandy substrates, taking mouthfuls of sand and expelling it through its gills to extract food particles.
Fin Margins
Often, the dorsal and caudal fins will have reddish or orange margins, especially in mature individuals.
Habitat
- Tipo de água
- freshwater
- Profundidade
- Typically found in shallow to moderate depths, often near the banks.
- Ambiente
- Inhabits a wide range of freshwater environments including rivers, streams, lakes, lagoons, and estuaries. Prefers areas with sandy or muddy substrates, often with submerged vegetation, roots, or rocky outcrops for shelter. Can tolerate a degree of salinity in estuarine environments.
- Distribuição geográfica
- Native to eastern and southeastern Brazil, extending from the state of Bahia south to Rio Grande do Sul. Also found in Uruguay and parts of Argentina. It is one of the most widespread cichlids in the region.
Informações sobre aquário
- Nível de cuidado: intermediate
- Temperamento: semi-aggressive
- Alimentação: omnivore
- Tamanho mínimo do aquário: 150 liters (40 gallons) for a single specimen, larger for a pair or community
- Temperatura: 22-28°C (72-82°F)
- Nível de pH: 6.0-7.5
- Dureza da água: 5-15 dGH
- Compatibilidade: Can be kept with other similarly sized, robust cichlids or larger, peaceful community fish. Avoid very small or overly aggressive tank mates. Best kept in pairs or small groups in a sufficiently large aquarium.
- Requisitos especiais: Requires a sandy substrate for sifting, as this is a natural feeding behavior. Provide plenty of hiding places using rocks, driftwood, and robust plants. Good filtration and regular water changes are essential. Can be territorial, especially during breeding.
Informações no ambiente natural
- Estado de conservação: least concern
- Sazonalidade: Breeding typically occurs during the rainy season, but can breed year-round in stable conditions.
- Preço de mercado: Low to medium (primarily for the aquarium trade)
- Importância comercial: low
- Sabor: Mild, slightly earthy
- Textura: Flaky, firm
- Métodos de preparo: Fried, Baked, Grilled, Stewed
- Valor nutricional: Good source of protein and omega-3 fatty acids.
Fatos principais
Earth-Eater Behaviorbehavior
Geophagus brasiliensis is a true 'earth-eater,' constantly sifting through the substrate with its mouth to find food particles, a fascinating behavior to observe in aquariums.
Biparental Carebehavior
Both male and female Geophagus brasiliensis participate in the care of their eggs and fry, exhibiting strong parental instincts and territorial defense during breeding.
Wide Distributioninteresting
This species is one of the most geographically widespread cichlids in eastern South America, adapting to a variety of freshwater and even slightly brackish habitats.
Color Variationamazing
The intensity and specific hues of the iridescent spots can vary significantly depending on the fish's mood, health, and geographic origin, making each individual unique.
Informações de segurança
Seguro- Nível de segurança: safe
- Venenoso: Não
- Comestibilidade: edible
- Observações de manuseio: No specific handling precautions are required beyond standard fish handling practices. Avoid excessive stress. They may nip if handled roughly, but their teeth are not sharp enough to cause significant injury to humans.
Espécies similares
Geophagus iporangensis
Geophagus iporangensis
G. iporangensis typically has a more elongated body and a less pronounced lateral blotch. Its coloration tends to be more subdued, with fewer iridescent spots compared to G. brasiliensis. Geographic distribution is also more restricted.
Crenicichla species (Pike Cichlids)
Crenicichla spp.
Crenicichla species have a much more elongated, torpedo-shaped body and a more predatory mouth. They lack the iridescent spotting and prominent lateral blotch characteristic of G. brasiliensis. Their behavior is also significantly more aggressive.
Australoheros facetus (Chanchita)
Australoheros facetus
While sometimes confused due to overlapping common names and geographic range, A. facetus generally has a more robust, deeper body and a different pattern of vertical bars or blotches, rather than the distinct iridescent spots of G. brasiliensis. Its mouth is also typically larger and more upturned.
Classificação científica
- Reino
- Animalia
- Filo
- Chordata
- Classe
- Actinopterygii
- Ordem
- Cichliformes
- Família
- Cichlidae
- Gênero
- Geophagus
- Espécie
- brasiliensis
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