Marbled Headstander
Abramites hypselonotus
12-15 cm22-28 °CHard200 L
Abramites hypselonotus, known as the Marbled Headstander, is a unique fish with a high body, suitable for experienced aquarists.
Your Guide to Freshwater Aquarium Fish
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List of Freshwater Aquarium Fish
Explore our comprehensive articles on various species of freshwater aquarium fish. Each article provides detailed information on proper care, tank requirements, feeding and maintenance, as well as breeding. Discover the specifics of caring for different species and ensure your fish thrive in optimal conditions.
Banded Mountain Loach
Acanthocobitis urophthalmus
5-7 cm22-26 °CEasy80 LThe Banded Mountain Loach, also known as Acanthocobitis Uropthalmus, is a small, peaceful bottom-dwelling fish, ideal for planted aquariums with plenty of hiding places.
Acanthocobitis zonalternans
Acanthocobitis zonalternans
5-8 cm22-26 °CEasy60 LAcanthocobitis zonalternans, commonly known as the Zebra Loach or Striped Loach, is a small, active bottom-dwelling fish with striking black-and-white stripes, making it a perfect addition to community aquariums. Learn more about its care, feeding, and unique characteristics.
Dwarf Horseface Loach
Acanthopsoides molobrion
3-5 cm22-28 °CEasy80 LThe Dwarf Horseface Loach is a small, peaceful, and nocturnal burrowing fish, perfect for a mature soft-substrate aquarium with other small, gentle species.
Horseface Loach
Acantopsis choirorhynchos
15-20 cm22-28 °CNormal200 LAcantopsis choirorhynchos, commonly known as the Horseface Loach, is a unique bottom-dwelling fish with an elongated snout resembling a horse's face.
Acarichthys Heckelii
Acarichthys heckelii
12-15 cm24-28 °CNormal250 LAcarichthys heckelii, also known as Acaricht Heckelii, is a vibrant and unique freshwater fish renowned for its stunning colors and fascinating behavior.
Blue Spotted Acara
Aequidens pulcher
15-20 cm23-28 °CNormal200 LAequidens pulcher, commonly known as the Blue Spotted Acara, is a popular cichlid species recognized for its vibrant coloration and relatively calm temperament.
Blue Acara
Aequidens rivulatus
20-30 cm22-27 °CHard200 LThe stunning cichlid known for its vibrant colors and bold character, the Blue Acara is a popular choice among experienced aquarium enthusiasts.
Spotted Raphael Catfish
Agamyxis pectinifrons
15-18 cm23-27 °CEasy150 LThe Spotted Raphael Catfish is a hardy, nocturnal, and peaceful bottom-dweller, known for the distinct clicking sounds it produces when stressed.
Yellow-Tail Congo Tetra
Alestopetersius caudalis
5-6 cm23-27 °CEasy60 LA beautiful, active, and peaceful shoaling fish from the Congo River basin, the Yellow-Tail Congo Tetra is a jewel for the planted community aquarium.
Blackfin Congo Tetra
Alestopetersius nigropterus
5-6 cm23-27 °CEasy60 LA lively and colorful shoaling fish from the Congo River basin, the Blackfin Congo Tetra is a lesser-known but beautiful cousin of the more common Congo Tetra.
Calvus Cichlid
Altolamprologus calvus
10-15 cm23-27 °CNormal100 LAltolamprologus calvus, or the Calvus Cichlid, is a predatory cichlid from Lake Tanganyika, distinguished by its unique body shape and intriguing behavior. A species tank or carefully selected tank mates are necessary.
Compressiceps Cichlid
Altolamprologus compressiceps
10-15 cm23-28 °CNormal100 LAltolamprologus compressiceps is a predatory cichlid from Lake Tanganyika with a unique high and compressed body. Itrequires a rocky landscape and careful consideration of tank mates.
Convict Cichlid
Amatitlania nigrofasciata
10-13 cm24-28 °CNormal150 LThe Convict Cichlid, or Zebra Cichlid, is a popular aquarium fish known for its interesting behavior and ease of care. It is characterized by pronounced territoriality and parental care.
Dwarf Loach
Ambastaia sidthimunki
4-6 cm24-28 °CEasy80 LAmbastaia sidthimunki, also known as the Dwarf Loach, is an active and social fish that is perfect for peaceful community aquariums.
Climbing Perch
Anabas testudineus
20-25 cm22-30 °CNormal200 LThe Climbing Perch, or Anabas, is a unique labyrinth fish capable of breathing atmospheric air, surviving out of water, and even moving on land. A predator that requires a spacious aquarium.
Starlight Bristlenose Catfish
Ancistrus cirrhosus
8-10 cm24-28 °CEasy80 LThe Starlight Bristlenose Catfish is a hardy algae-eater with stunning star-like spots, perfect for community tanks.
Longfin Bristlenose Catfish
Ancistrus dolichopterus
12-15 cm22-26 °CEasy100 LThe Longfin Bristlenose Catfish is a stunning pleco with elegant flowing fins, an easy-care algae eater for any tank.
Common Bristlenose Catfish
Ancistrus sp.
8-10 cm24-28 °CEasy80 LThe Common Bristlenose Catfish is the perfect beginner's pleco, a tireless algae fighter and reliable tank cleaner.
Anomalochromis Thomasi
Anomalochromis thomasi
6-8 cm22-28 °CEasy80 LAnomalochromis Thomasi is a small but colorful and interesting cichlid, perfect for beginner aquarists. Its peaceful nature and hardiness make it an excellent choice for small aquariums.
Striped Headstander
Anostomus anostomus
15-18 cm23-27 °CNormal250 LThe Striped Headstander is a striking South American fish known for its head-down swimming posture. Requires a spacious tank and experienced care.
Bloodfin Tetra
Aphyocharax anisitsi
4-5 cm22-28 °CEasy60 LThe Bloodfin Tetra is an active schooling fish with striking red fins. Hardy, peaceful, and perfect even for beginner aquarists.
Red-Striped Killifish
Aphyosemion striatum
4-5 cm20-24 °CEasy30 LThe Red-Striped Killifish is a vibrant West African killifish with striking red stripes. Undemanding and ideal for small planted aquariums.
Agassiz's Dwarf Cichlid
Apistogramma agassizii
6-8 cm24-28 °CNormal60 LAgassiz's Dwarf Cichlid is a colorful Amazonian dwarf cichlid with a distinctive spade-shaped tail. Ideal for planted soft-water aquariums.
Two-Stripe Dwarf Cichlid
Apistogramma bitaeniata
5-7 cm24-28 °CNormal50 LThe Two-Stripe Dwarf Cichlid is an elegant Amazonian dwarf cichlid with elongated fins and vivid coloration. Prized for its beauty and peaceful nature.
Borelli's Dwarf Cichlid
Apistogramma borellii
5-7 cm22-28 °CEasy50 LApistogramma borellii is a colorful dwarf cichlid from South America with a peaceful temperament, well-suited for community tanks of 50 liters or more.
Cockatoo Dwarf Cichlid
Apistogramma cacatuoides
6-8 cm24-28 °CNormal70 LApistogramma cacatuoides is a vibrant dwarf cichlid named for its cockatoo-like dorsal crest, prized for vivid colors and engaging behavior.
Blue Spot Apistogramma
Apistogramma eunotus
5-7 cm24-28 °CNormal80 LApistogramma eunotus is a rare Peruvian dwarf cichlid with vivid blue spots, ideal for planted soft water community tanks of 80 liters or more.
Panduro Dwarf Cichlid
Apistogramma panduro
5-6 cm24-28 °CEasy50 LApistogramma panduro is a striking dwarf cichlid from the Peruvian Amazon with vivid blue-orange coloring, ideal for small planted aquariums.
Three-Striped Dwarf Cichlid
Apistogramma trifasciata
4-6 cm24-28 °CNormal70 LApistogramma trifasciata is a striking dwarf cichlid from the Paraguay and Parana river basins, recognized by three bold dark horizontal stripes.
About the Project
A comprehensive, open-source catalog of freshwater aquarium fish — built by aquarists, for aquarists.
300+ Species Catalog
Detailed profiles covering characteristics, feeding, care, breeding, and useful tips for each freshwater aquarium fish species.
Open Source
Built on open-source principles using Markdown format. All content is stored in a public GitHub repository anyone can contribute to.
Community Driven
Created by passionate aquarists who continuously research and add new data, ensuring the catalog remains a valuable resource for all levels.