Freshwater Aquarium Fish Compatibility

Freshwater aquarium fish are easy to care and very enjoyable pets. They can easily live in a small 5 gallon tank and love swimming in 100 gallon tank. You can house your pet in a glass or acrylic tank. Use different substrates and decorative ornamental pieces like rocks, live plants, plastic plants and even some fancy plastic aquarium toys. The tank can be lit up with a bulb and you can place a filter to keep the water clean. You can even place a heater to provide some warmth to them. You can use normal tap water as the medium for your pet to live in.

As an aquarium enthusiast, you can choose from a variety of fish. You should keep in mind, that it should be similar in size to avoid larger ones picking on the smaller ones, or the tiny ones eating up the fins of the larger fish. Also, they should not compete with each other for food, as that will result in starvation and death of the weaker lot. You need to choose the right pet for your aquarium that will exist peacefully alongside each other.

Basics of Their Compatibility

The freshwater fish are divided into 3 categories according to their behavior:

• Community Fish: They are peace-loving, happy-go-lucky. They do not get into fights and are compatible with all the others. You can safely mix and match different community species for your tank.
• Semi-aggressive Fish: These are a bit high-strung and will not shy away and would occasionally nip and bite other fish. They tend to be peaceful when small, but as they increase in size they turn into fin-nipping rogues. They will chase and tire the others. They are good for community tanks, but make sure you keep an eye on them as they grow bigger in size.
• Aggressive Fish: Just as the name suggests, these fish can be called the fighters. They love to pick on little ones and are not compatible with any other species. They can live around other aggressive ones of their own kind or size. However, they have a habit of bullying weaker ones by pushing them around.

They are very sensitive and delicate creatures. Any amount of stress can lead to their untimely death.

The Compatibility Chart

Category	Community	Semi-aggressive	Aggressive
Anabantids	Dwarf Gourami Flame Gourami Opaline Gourami Pearl Gourami Siamese Fighting Fish/Betta Fish Spiketailed Paradisefish	Honey Gourami Kissing Gourami	Black Paradisefish
Aquarium Catfish	Banjo Catfish Bristlenose Chinese Algae Eater Corydoras Green Catfish Leopard Catfish Plecostomus Spotted Catfish Upside Down Catfish	Bumble Bee Catfish
Charachins	Black Neon Tetra Black Phantom Tetra Cardinal Tetra Congo Tetra Emperor Tetra Flame Tetra Glowlight Tetra Head and Tail Light Tetra Neon Tetra Fish Rummy Nosed Tetra Serpae Tetra Hatchetfish Pencilfish Bloodfin Penguin Fish X-Ray Fish	Bleeding Heart Tetra Black Widow Buenos Aires Tetra Silver Dollar	Red Belly Piranha
Cichlids	Freshwater Angelfish Blue Acara Discus Festivum Ram	Firemouth Severum	Convict Green Terror Jack Dempsey Red Oscar
Cyprinids	Cherry Barb Bala (Tri-Color) Shark Black Shark Blue Danio Giant Danio White Cloud Zebra Danio Harlequin Rasbora	Flying Fox Green Tiger Barb Red Tailed Shark Rosy Barb Tiger Barb Tinfoil Barb
Killifish	Lyretail
Livebearers	Guppy fish Molly Platy	Swordtail	Knife Livebearer
Loaches	Clown Loach Dwarf Loach Horseface Loach
Unclassified	Australian Rainbowfish Boesmani Rainbow fish Boesman's Rainbow fish Bumble Bee Goby Elephant Nose Rainbow fish	Archer Butterfly Fish

This chart will help you know which ones are compatible. You can try keeping some of the community fish with the semi-aggressive species, but make sure you always have an eye on them. Do not introduce the aggressive ones to the tank or most of your peace-loving fish will end up dead.