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Aphyocharax anisitsi, commonly known as the Red Tetra or Bloodfin Tetra, is a small, active freshwater fish belonging to the family Characidae. It is highly valued in the aquarium trade for its vibrant coloration and schooling behavior. This species exhibits a streamlined body, typical of characins, adapted for swift movement in flowing waters. The most striking feature is the intense red coloration on its fins, particularly the caudal, anal, and dorsal fins, which contrasts beautifully with its silvery body.
Fysiske karakteristika
- Kropsform
- elongated
- Farvetegning
- The body is predominantly silvery, sometimes with a faint greenish or yellowish sheen. The most prominent feature is the brilliant red coloration on the caudal (tail), anal, and dorsal fins. The pectoral and pelvic fins may also show some red, though often less intensely. Males tend to exhibit more vibrant coloration, especially during breeding. A subtle dark line may run along the lateral line, becoming more pronounced under stress or during courtship.
- Skæltype
- cycloid
- Mundens placering
- terminal
- Kendetegn
- Vibrant red fins, particularly caudal, anal, and dorsal., Streamlined, silvery body., Small adipose fin present.
- Rygfinne
- Single, relatively short dorsal fin, often with a red tint.
- Halefinne
- Forked caudal fin, intensely red.
- Brystfinne
- Transparent to slightly reddish, positioned ventrally.
- Karakteristiske finner
- Adipose fin present, typical of characins, located between the dorsal and caudal fins.
Identifikationstips
Fin Coloration
The most definitive characteristic is the intense red color on the caudal, anal, and dorsal fins. This is usually brighter and more extensive than in similar species.
Body Shape and Size
A slender, torpedo-shaped body, typically reaching a maximum size of 4-5 cm (1.6-2 inches) in length. The silvery body contrasts sharply with the red fins.
Schooling Behavior
They are obligate schooling fish. Observing them in a tight, active school is a good indicator, as many similar species may school less intensely.
Habitat
- Vandtype
- freshwater
- Dybde
- Typically found in shallow to moderately deep waters, often near the surface or mid-water column.
- Miljø
- Native to slow-moving or still waters of rivers, streams, and floodplains. They prefer areas with dense vegetation, submerged roots, and leaf litter, which provide shelter and foraging grounds. Water can range from clear to slightly turbid, often with a dark, tannin-stained appearance due to decaying organic matter.
- Geografisk udbredelse
- Native to South America, specifically the Paraná River basin in Paraguay, Argentina, and Brazil. Their distribution extends across various tributaries and associated wetlands within this region.
Akvarieoplysninger
- Plejeniveau: beginner
- Temperament: peaceful
- Kost: omnivore
- Minimum akvariestørrelse: 60 liters (15 gallons)
- Temperatur: 20-26°C (68-79°F)
- pH-niveau: 6.0-7.5
- Hårdhed: 5-15 dGH
- Kompatibilitet: Excellent for community tanks with other peaceful, similarly sized fish. Avoid housing with very large or aggressive species that might prey on them or outcompete them for food. Best kept in schools of 6 or more individuals to reduce stress and encourage natural behavior.
- Særlige krav: Requires a well-planted aquarium with open swimming spaces. A dark substrate can enhance their coloration. Good filtration and regular water changes are essential. They are jumpers, so a secure lid is recommended.
Information om vilde bestande
- Bevaringsstatus: least concern
- Sæson: Breeding typically occurs during the rainy season in their natural habitat, when food is abundant and water parameters are stable.
- Markedspris: Low to moderate for aquarium trade
- Kommerciel betydning: medium
- Smag: Not typically consumed due to small size
- Konsistens: Not typically consumed due to small size
- Næringsværdi: Not typically consumed due to small size
Nøglefakta
Schooling Behaviorbehavior
Aphyocharax anisitsi is a highly social species that thrives in large schools. Keeping them in groups of at least 6-10 individuals is crucial for their well-being, as it reduces stress and encourages natural behaviors like synchronized swimming.
Jumping Abilitybehavior
Despite their small size, Red Tetras are known jumpers. In their natural habitat, this might be a defense mechanism or a way to navigate flooded areas. In an aquarium, a tight-fitting lid is essential to prevent them from leaping out.
Color Enhancementinteresting
The vibrant red coloration of Aphyocharax anisitsi can be significantly enhanced by providing a varied diet rich in carotenoids (e.g., spirulina, krill) and maintaining optimal water quality. A dark substrate and background in the aquarium can also make their colors 'pop'.
Taxonomic Confusionevolution
Historically, there has been some confusion with the Buenos Aires Tetra (Hyphessobrycon anisitsi) due to similar common names and some shared characteristics. However, they belong to different genera and have distinct morphological differences, particularly in body shape and fin patterns.
Sikkerhedsoplysninger
Sikker- Sikkerhedsniveau: safe
- Giftig: Nej
- Spiselighed: not recommended
- Håndteringsnoter: Aphyocharax anisitsi is a small, harmless fish. No special handling precautions are required beyond standard care for small aquarium fish. Avoid sudden movements or loud noises that can startle them. They are delicate and should be handled gently with a fine-mesh net if removal from the tank is necessary.
Lignende arter
Buenos Aires Tetra
Hyphessobrycon anisitsi
While also having red fins, the Buenos Aires Tetra (Hyphessobrycon anisitsi) is generally larger (up to 7 cm), has a more robust body, and often exhibits a distinct black spot on the caudal peduncle, which Aphyocharax anisitsi lacks. The red coloration on the fins of Aphyocharax anisitsi is typically more uniform and intense.
Flame Tetra
Hyphessobrycon flammeus
The Flame Tetra is smaller and has a more compressed body. Its red coloration is primarily concentrated on the posterior half of the body and fins, often with two distinct vertical black bars behind the gill plate, which are absent in Aphyocharax anisitsi.
Glowlight Tetra
Hemigrammus erythrozonus
The Glowlight Tetra is easily distinguished by its prominent iridescent orange-red stripe running horizontally along its body, from the snout to the caudal fin. It lacks the extensive red fin coloration seen in Aphyocharax anisitsi.
Videnskabelig klassifikation
- Rige
- Animalia
- Række
- Chordata
- Klasse
- Actinopterygii
- Orden
- Characiformes
- Familie
- Characidae
- Slægt
- Aphyocharax
- Art
- Aphyocharax anisitsi
Udforsk Rød Tetra
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