Species database

Find the right fish for your tank

188 profiles with tank size, water needs, temperament, and tank-mate guidance — filter by type and difficulty to narrow the list.

188 Species
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Showing 16 of 188 species

Intermediate Aggressive

African Clawed Frog

Xenopus laevis

Type
Freshwater
Tank
30 gallons
Size
5 inches

The African Clawed Frog (*Xenopus laevis*) is frequently confused with the much smaller, peaceful African D…

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Advanced Aggressive

African Butterfly Fish

Pantodon buchholzi

Type
Freshwater
Tank
40 gallons
Size
5 inches

The African Butterfly Fish can jump 6+ feet out of the water to catch flying insects — their oversized pect…

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Beginner Friendly Peaceful

African Dwarf Frog

Hymenochirus boettgeri

Type
Freshwater
Tank
15 gallons
Size
2.5 inches

The African Dwarf Frog is a fully aquatic frog that makes a unique and entertaining addition to community a…

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Advanced Aggressive

African Leaf Fish

Polycentropsis abbreviata

Type
Freshwater
Tank
40 gallons
Size
4 inches

The African Leaf Fish is a master of disguise and one of the most fascinating predatory fish in the aquariu…

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Beginner Friendly Peaceful

Albino Corydoras

Corydoras aeneus (albino variety)

Type
Freshwater
Tank
20 gallons
Size
2.5 inches

The Albino Corydoras is a striking color variant of the Bronze Corydoras, featuring a pale pinkish-white bo…

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Beginner Friendly Peaceful

Amano Shrimp

Caridina multidentata

Type
Freshwater
Tank
20 gallons
Size
2 inches

The Amano Shrimp, also known as the Algae Eating Shrimp or Caridina japonica, is widely considered the best…

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Intermediate Semi-Aggressive

Angelfish

Pterophyllum scalare

Type
Freshwater
Tank
55 gallons
Size
8 inches

Angelfish are tall Amazon cichlids, not oversized tetras. Plan for 55+ gallons with 18–24 inch height, soft…

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Intermediate Peaceful

Apistogramma

Apistogramma cacatuoides

Type
Freshwater
Tank
30 gallons
Size
3.5 inches

The Cockatoo Dwarf Cichlid, or Apistogramma cacatuoides, is one of the most spectacular and popular dwarf c…

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Advanced Semi-Aggressive

Silver Arowana

Osteoglossum bicirrhosum

Type
Freshwater
Tank
400 gallons
Size
48 inches

The Silver Arowana is one of the most impressive and jaw-dropping fish in the aquarium hobby. These South A…

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Intermediate Peaceful

Bala Shark

Balantiocheilos melanopterus

Type
Freshwater
Tank
125 gallons
Size
14 inches

The Bala Shark, also known as the Silver Shark or Tricolor Shark, is a large, peaceful fish that is complet…

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Intermediate Peaceful

Banggai Cardinalfish

Pterapogon kauderni

Type
Saltwater / Marine
Tank
40 gallons
Size
3.5 inches

The Banggai Cardinalfish is an elegant and distinctive saltwater fish known for its stunning silver body ad…

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Intermediate Peaceful

Bamboo Shrimp

Atyopsis moluccensis

Type
Freshwater
Tank
30 gallons
Size
4 inches

The Bamboo Shrimp, also known as the Singapore Flower Shrimp or Wood Shrimp, is one of the most fascinating…

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Beginner Friendly Aggressive

Betta Fish

Betta splendens

Type
Freshwater
Tank
10 gallons
Size
3 inches

Bettas are not bowl fish. A single Betta splendens needs a heated, filtered tank of 5+ gallons (10 preferre…

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Intermediate Semi-Aggressive

Black Cap Basslet

Gramma melacara

Type
Saltwater / Marine
Tank
40 gallons
Size
4 inches

The Black Cap Basslet is a close relative of the popular Royal Gramma but features a black cap on the head…

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Advanced Semi-Aggressive

Black Ghost Knife Fish

Apteronotus albifrons

Type
Freshwater
Tank
100 gallons
Size
20 inches

The Black Ghost Knife Fish is one of the most exotic and captivating fish available to aquarists. Named for…

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Beginner Friendly Peaceful

Black Neon Tetra

Hyphessobrycon herbertaxelrodi

Type
Freshwater
Tank
20 gallons
Size
1.5 inches

The Black Neon Tetra is an underrated gem that offers the peaceful temperament of tetras with a subtle, ele…

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