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Adolfo's Corydoras
Corydoras adolfoi
Prefers softer, acidic water.
African Butterfly Fish
Pantodon buchholzi
Surface-dweller, will eat small top-dwelling fish.
African Clawed Frog
Xenopus laevis
Highly predatory, species-only tank.
African Dwarf Frog
Hymenochirus boettgeri
Can be outcompeted for food.
Amano Shrimp
Caridina multidentata
Excellent algae eater.
American Flagfish
Jordanella floridae
May eat hair algae.
Angelfish
Pterophyllum scalare
Will eat very small fish.
Apistogramma Cockatoo
Apistogramma cacatuoides
Territorial when breeding.
Assassin Snail
Clea helena
Will eat other snails.
Auratus Cichlid
Melanochromis auratus
Mbuna. Notoriously aggressive and intolerant of tankmates, especially other males.
Axolotl
Ambystoma mexicanum
Species-only coldwater setup required.
Bala Shark
Balantiocheilos melanopterus
Grows very large; not a true shark.
Betta (Female)
Betta splendens
Best kept in a sorority of 5+ to diffuse aggression. Avoid long-finned tankmates.
Betta (Male)
Betta splendens
Keep singly. Temperament varies greatly.
Black Ghost Knife Fish
Apteronotus albifrons
Grows very large; mostly blind.
Black Neon Tetra
Hyphessobrycon herbertaxelrodi
Black Phantom Tetra
Hyphessobrycon megalopterus
Males may display harmlessly.
Black Ruby Barb
Pethia nigrofasciata
Black Sharkminnow
Labeo chrysophekadion
Extremely aggressive and territorial. Not a community fish.
Black Skirt Tetra
Gymnocorymbus ternetzi
Known fin-nipper; keep in large schools (8+) to reduce aggression.
Bleeding Heart Tetra
Hyphessobrycon erythrostigma
Peaceful but can be shy; named for the red spot on its side.
Blood Parrot Cichlid
Amphilophus citrinellus × Paraneetroplus synspilus
Hybrid fish with a unique shape.
Bloodfin Tetra
Aphyocharax anisitsi
Very active and hardy.
Blue Dolphin Cichlid
Cyrtocara moorii
African Hap, relatively peaceful for its size.
Blue Gularis Killifish
Fundulopanchax sjoestedti
Large, predatory killifish. Best kept in a species-only tank.
Blue Tetra
Boehlkea fredcochui
Can be nippy, keep in larger groups.
Boeseman's Rainbowfish
Melanotaenia boesemani
Bolivian Ram
Mikrogeophagus altispinosus
Hardier than German Blue Rams.
Bristlenose Pleco
Ancistrus cirrhosus
Hardy and manageable pleco. Males develop prominent "bristles" on their snout.
Bronze Corydoras
Corydoras aeneus
Peaceful bottom dwellers.
Buenos Aires Tetra
Hyphessobrycon anisitsi
Known to eat live plants.
Bumblebee Catfish
Microglanis iheringi
Nocturnal, will eat small fish.
Bumblebee Goby
Brachygobius doriae
Brackish water fish. Can be kept in freshwater but thrives in low-end brackish.
Cardinal Tetra
Paracheirodon axelrodi
Slightly larger and more sensitive than Neons.
Celebes Rainbowfish
Marosatherina ladigesi
Celestial Pearl Danio
Danio margaritatus
Tiny and can be shy.
Cherry Barb
Puntius titteya
Cherry Shrimp
Neocaridina davidi
Will be eaten by most fish.
Chili Rasbora
Boraras brigittae
True nano fish.
Clown Killifish
Epiplatys annulatus
Clown Loach
Chromobotia macracanthus
Grows very large; eats snails.
Cobalt Blue Zebra
Maylandia callainos
Mbuna. Less aggressive than some zebras but still requires a species-specific setup.
Columbian Shark
Ariopsis seemanni
Requires brackish water, transitioning to full marine. Will eat smaller fish.
Congo Puffer
Tetraodon miurus
An ambush predator that buries itself in the sand. Must be kept in a species-only tank.
Congo Tetra
Phenacogrammus interruptus
Males have flowing fins.
Convict Cichlid
Amatitlania nigrofasciata
Extremely aggressive when breeding.
Croaking Gourami
Trichopsis vittata
Makes audible croaking sounds.
Demasoni Cichlid
Pseudotropheus demasoni
Mbuna. Must be kept in large groups (12+) to manage extreme aggression towards conspecifics.
Diamond Tetra
Moenkhausia pittieri
Stunning iridescent scales.
Discus
Symphysodon aequifasciatus
Requires high temperatures and pristine water.
Dojo Loach
Misgurnus anguillicaudatus
Can jump; prefers cooler water.
Dragon Blood Peacock
Aulonocara sp. (Hybrid)
Peacock. Popular line-bred variant, known for its pink/red coloration.
Dragon Goby
Gobioides broussonnetii
Brackish water. Gentle giant, nearly blind filter feeder. Needs sandy substrate.
Dwarf Chain Loach
Ambastaia sidthimunki
Great for snail control.
Dwarf Gourami
Trichogaster lalius
Males can be territorial with each other.
Dwarf Pencilfish
Nannostomus marginatus
A small, peaceful top-dwelling fish. Can be shy.
Dwarf Rasbora
Boraras maculatus
Electric Blue Acara
Andinoacara pulcher
One of the most peaceful cichlids.
Electric Blue Hap
Sciaenochromis fryeri
Hap. Predatory towards smaller fish. Males are brilliant blue.
Electric Yellow Cichlid
Labidochromis caeruleus
African Cichlid (Mbuna), needs high pH.
Elephant Nose Fish
Gnathonemus petersii
Weak electrical field, keep singly.
Ember Tetra
Hyphessobrycon amandae
Tiny and peaceful nano fish.
Emerald Corydoras
Corydoras splendens
Emerald Dwarf Danio
Celestichthys erythromicron
Also known as Galaxy Rasbora.
Emperor Tetra
Nematobrycon palmeri
Males can be territorial but are generally peaceful.
Endler's Livebearer
Poecilia wingei
Smaller and more colorful than guppies.
Exclamation Point Rasbora
Boraras urophthalmoides
Fahaka Puffer
Tetraodon lineatus
Very large, highly aggressive freshwater predator. Species-only "wet pet".
Figure-Eight Puffer
Tetraodon biocellatus
Requires low-end brackish water. Species-only is best.
Firemouth Cichlid
Thorichthys meeki
Flares red gills when threatened.
Five-Band Barb
Desmopuntius pentazona
Freshwater Hatchetfish
Carnegiella strigata
Top-dweller; tank must be covered.
Frontosa Cichlid
Cyphotilapia frontosa
Large Tanganyikan predator.
Gardneri Killifish
Fundulopanchax gardneri
Can be aggressive towards small fish.
Geophagus Surinamensis
Geophagus surinamensis
Eartheater, sifts sand.
German Blue Ram
Mikrogeophagus ramirezi
Sensitive to water parameters.
Giant Danio
Devario aequipinnatus
Very active, needs a long tank.
Glass Catfish
Kryptopterus vitreolus
Glowlight Danio
Danio choprae
Glowlight Tetra
Hemigrammus erythrozonus
Hardy and peaceful.
Gold Barb
Barbodes semifasciolatus
Gold Laser Corydoras
Corydoras sp. (CW010)
Striking gold stripe.
Golden Lyretail Killifish
Aphyosemion australe
Peaceful but will eat small shrimp/fry.
Golden Wonder Killifish
Aplocheilus lineatus
Color morph of Striped Panchax. Top-dwelling predator.
Goldfish (Common)
Carassius auratus
Coldwater fish, not for tropical tanks.
Green Neon Tetra
Paracheirodon simulans
Smaller cousin of the Neon Tetra.
Green Spotted Puffer
Dichotomyctere nigroviridis
Must have brackish water, moving to full marine as an adult. Species-only.
Green Terror
Andinoacara rivulatus
Lives up to its name; highly aggressive.
Guppy
Poecilia reticulata
Males have long, flowing fins.
Harlequin Rasbora
Trigonostigma heteromorpha
Head and Tail Light Tetra
Hemigrammus ocellifer
A very hardy and popular beginner tetra with iridescent spots.
Hillstream Loach
Sewellia lineolata
Needs high flow and oxygen.
Honey Gourami
Trichogaster chuna
Indian Glassfish
Parambassis ranga
Needs live/frozen food.
Iridescent Shark
Pangasianodon hypophthalmus
Grows to a massive size. Not suitable for home aquariums. Will eat smaller fish.
Jack Dempsey
Rocio octofasciata
Very aggressive, especially when mature.
Julii Corydoras
Corydoras julii
Kenyi Cichlid
Maylandia lombardoi
Mbuna. Extremely aggressive, especially males. Females turn from blue to yellow as they mature.
Keyhole Cichlid
Cleithracara maronii
Very shy and peaceful cichlid.
Knight Goby
Stigmatogobius sadanundio
Brackish water fish. Can be territorial with other bottom dwellers.
Kribensis Cichlid
Pelvicachromis pulcher
Territorial when breeding.
Lambchop Rasbora
Trigonostigma espei
Least Killifish
Heterandria formosa
One of the world's smallest fish. Technically a livebearer.
Lemon Tetra
Hyphessobrycon pulchripinnis
Leopard Danio
Danio rerio (Hamilton, 1822)
Livingstonii Cichlid
Nimbochromis livingstonii
Hap. Large predator famous for playing dead to hunt small fish.
Loreto Tetra
Hyphessobrycon loretoensis
A colorful nano tetra that can be sensitive to water conditions.
Maingano Cichlid
Melanochromis cyaneorhabdos
Mbuna. Keep 1 male to 3-4 females. Aggressive towards similar-looking fish.
Marbled Hatchetfish
Carnegiella strigata
Top-dweller; tank must be covered.
Molly
Poecilia sphenops
Prefer slightly harder water.
Moonlight Gourami
Trichopodus microlepis
Mosquito Rasbora
Boraras brigittae
Very similar to Chili Rasbora.
Musk Turtle
Sternotherus odoratus
Not a community fish. Will eat fish.
Mystery Snail
Pomacea bridgesii
Long antennae can be nipped.
Neon Blue Goby
Stiphodon semoni
Freshwater. Requires mature tank with high flow and biofilm/algae to graze on.
Neon Tetra
Paracheirodon innesi
Very popular, peaceful schooling fish.
Nerite Snail
Neritina natalensis
Great algae eater, won't breed in freshwater.
Norman's Lampeye Killifish
Poropanchax normani
Bright blue "lamps" for eyes.
OB Peacock
Aulonocara sp. (Hybrid)
Peacock. Widely available hybrid with blotched patterns. Temperament can vary.
Oscar
Astronotus ocellatus
Highly predatory and territorial.
Otocinclus Catfish
Otocinclus vittatus
Excellent algae eater. Best added to a mature tank. Can be sensitive.
Panda Cory
Corydoras panda
Pea Puffer
Carinotetraodon travancoricus
Species-only. Aggressive fin-nipper. Needs snails in diet.
Peacock Gudgeon
Tateurndina ocellicauda
Colorful and peaceful goby.
Pearl Danio
Danio albolineatus
Pearl Gourami
Trichopodus leerii
Penguin Tetra
Thayeria boehlkei
Unique swimming angle.
Phoenix Rasbora
Boraras merah
Pictus Catfish
Pimelodus pictus
Will eat small fish.
Platy
Xiphophorus maculatus
Very hardy and comes in many colors.
Porkchop Rasbora
Trigonostigma espei
Powder Blue Dwarf Gourami
Trichogaster lalius
Color variation of Dwarf Gourami.
Pygmy Cory
Corydoras pygmaeus
Rainbow Cichlid
Herotilapia multispinosa
Rainbow Shark
Epalzeorhynchos frenatum
Territorial, especially with other shark-shaped fish. Can be kept with robust, fast fish.
Red Empress
Protomelas taeniolatus
Hap. Relatively peaceful for a Hap, but still needs a large tank with appropriate tankmates.
Red Eye Tetra
Moenkhausia sanctaefilomenae
Red Irian Rainbowfish
Glossolepis incisus
Red Phantom Tetra
Hyphessobrycon sweglesi
Red Shoulder Peacock
Aulonocara stuartgranti
Peacock. Many regional variants exist. Males are colorful, females are drab.
Red Tail Shark
Epalzeorhynchos bicolor
Highly territorial towards other shark-like fish and its own kind.
Red Top Hongi
Labidochromis sp. "hongi"
Mbuna. Males show bright orange dorsal fins when dominant. Territorial.
Red Zebra Cichlid
Maylandia estherae
African Cichlid (Mbuna), needs high pH.
Ropefish
Erpetoichthys calabaricus
Eel-like, will eat small fish.
Rosy Barb
Pethia conchonius
Rubber Lip Pleco
Chaetostoma milesi
Rummy Nose Tetra
Hemigrammus rhodostomus
A red nose indicates good water quality.
Rusty Cichlid
Iodotropheus sprengerae
Mbuna. One of the most peaceful Mbuna species, but still requires a Malawi setup.
Salt and Pepper Corydoras
Corydoras habrosus
Very small and active cory.
Scarlet Badis
Dario dario
Tiny, males can be territorial with each other.
Scissortail Rasbora
Rasbora trilineata
Serpae Tetra
Hyphessobrycon eques
Notorious fin-nipper; keep in large schools (8+) to reduce aggression.
Severum
Heros efasciatus
Often called a "poor man's Discus".
Siamese Algae Eater
Crossocheilus oblongus
The true Siamese Algae Eater is the only fish that reliably eats Black Brush Algae. Can become territorial with age.
Silver Tip Tetra
Hasemania nana
Skunk Corydoras
Corydoras arcuatus
Distinctive black stripe along its back.
Snakeskin Barb
Desmopuntius rhomboocellatus
Sparkling Gourami
Trichopsis pumila
Sterba's Cory
Corydoras sterbai
Striped Panchax
Aplocheilus lineatus
Top-dwelling predator; will eat small fish. Tank must be covered.
Striped Raphael Catfish
Platydoras armatulus
Nocturnal "talking" catfish.
Sunshine Peacock
Aulonocara baenschi
Peacock. Relatively peaceful for a Malawi, but males will show aggression when breeding.
Swordtail
Xiphophorus hellerii
Males have a distinctive "sword" tail.
Thick Lipped Gourami
Trichogaster labiosa
Threadfin Rainbowfish
Iriatherina werneri
Three Spot Gourami
Trichopodus trichopterus
Tiger Barb
Puntigrus tetrazona
Notorious fin-nipper; keep in large schools (8+) to reduce aggression.
Turquoise Rainbowfish
Melanotaenia lacustris
Twig Catfish
Farlowella acus
Delicate and needs pristine water.
Upside-Down Catfish
Synodontis nigriventris
Venustus Cichlid
Nimbochromis venustus
Hap. Large predator known for ambushing smaller fish. Sometimes called a Giraffe Hap.
Von Rio Tetra (Flame Tetra)
Hyphessobrycon flammeus
X-Ray Tetra (Pristella)
Pristella maxillaris
Very hardy, transparent body.
Yoyo Loach
Botia almorhae
Can be boisterous.
Zebra Danio
Danio rerio
Very active, hardy, and popular.
Zebra Loach
Botia striata
Eats snails.
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