Fish

Planted Tank Compatibility Calculator, Fish Checker: Ensure Happy Fish in Your Small or Large Tank. From Angelfish to Tiger Barb Tank Mates, Discover the Hottest Freshwater Aquarium Fish. Your Ultimate Fish Tank Compare Chart.

Aquarium Fish Compatibility Check: Find the Best Combinations for Small to Very Large Tanks. Our real-time guide assists you in selecting fish species that thrive harmoniously in your prized aquarium. Discover ideal freshwater aquarium fish community combinations, ensuring the health and happiness of your aquatic companions.

Fishkeeping is a fast growing pastime worldwide, captivating both beginners and seasoned enthusiasts competing in global competitions for the most beautiful, creative, and ecologically interesting tank designs. Keeping an aquarium is a cherished indoor pastime, offering the pleasure of observing living fish, plants, and potential tank mates, coupled with the art of fish keeping to maintain a healthy and thriving tank.

Our Fish Compare site provides a quick and easy tool to compare various fish species, invertebrates, and plants side by side. From Angelfish tank mates to Tiger Barb companions and other popular freshwater tank fish – identify natural pairings before making a purchase.

Simply click on the Compare button for each species you wish to evaluate against others, including invertebrates and plants. A valuable tool for your beloved hobby – bookmark us for another helpful resource.

Showing all 200 resultsSorted by latest

Lemon Fin Barb
18” | Single | 200 gal

PH 6-7.5 | Peaceful
Longfin Rosy Barb
4” | 6 or more | 50 gal

PH 6-7.5 | Peaceful
Mahecola Barb
3” | 6 or more | 20 gal

PH 6-7.5 | Peaceful
Red Panda Melon Barb
2.5” | 6 or more | 20 gal

PH 6-8 | Peaceful
Spanner Barb
7” | 6 or more | 60 gal

PH 6-7.5 | Semi-Aggres.
Tinfoil Barb
13” | 6 or more | 75 gal

PH 6-7.5 | Peaceful
Gold Barb
3” | 6 or more | 20 gal

PH 6-8 | Peaceful
Checkered Barb
2” | 6 or more | 10 gal

PH 6-7 | Peaceful
Longfin Tiger Barb
3” | 6 or more | 30 gal

PH 6-8 | Semi-Aggres.
Gold Tiger Barb
2” | 6 or more | 10 gal

PH 6-8 | Peaceful
Green Tiger Barb
3” | 6 or more | 30 gal

PH 6-8 | Semi-Aggres.
Green Longfin Tiger Barb
3” | 6 or more | 30 gal

PH 6-8 | Semi-Aggres.
Black Spot Barb
6” | 6 or more | 60 gal

PH 6-7 | Semi-Aggres.
Porthole Rasbora
5" | 6 or more | 40 gal

PH 6-7.5 | Peaceful
Fire Rasbora
1.5" | 6 or more | 10 gal

PH 6-7 | Peaceful
Siamese Dwarf Rasbora
1" | 8 or more | 10 gal

PH 6-7 | Peaceful
Brittans Rasbora
2" | 8 or more | 15 gal

PH 6-7 | Peaceful
Red Axelrodi Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Siamese Dwarf Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Glowlight Rasbora
1" | 8 or more | 10 gal

PH 6-7.5 | Peaceful
Scissortail Rasbora
5" | 6 or more | 40 gal

PH 6-7.5 | Peaceful
Clown Rasbora
4" | 8 or more | 40 gal

PH 6-7.5 | Peaceful
Albino Tiger Barb
3” | 6 or more | 30 gal

PH 6-8 | Semi-Aggres.
Strawberry Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Rummy Nose Rasbora
1.5" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Blue Neon Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Kubotai Rasbora
3/4" | 8 or more | 10 gal

PH 6-7.5 | Peaceful
Dwarf Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Exclamation Point Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Phoenix Rasbora
3/4" | 8 or more | 10 gal

PH 6-7 | Peaceful
Chili Rasbora
3/4" | 8 or more | 10 gal

PH 6-7.5 | Peaceful
Brilliant Rasbora
2.5" | 6 or more | 15 gal

PH 6-7 | Peaceful
Red Line Rasbora
2" | 8 or more | 20 gal

PH 6-7.2 | Peaceful
Glowlight Tetra
1.5" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Snyder’s Barb
3.5” | 6 or more | 30 gal

PH 6-7.5 | Peaceful
Rohani Barb
5” | 6 or more | 60 gal

PH 6-7.5 | Peaceful
Denison Barb
4.5” | 6 or more | 55 gal

PH 6-7.5 | Peaceful
Rosy Barb
3” | 6 or more | 30 gal

PH 6-7.5 | Peaceful
Blue Velvet Tiger Barb
3” | 6 or more | 30 gal

PH 6-8 | Semi-Aggres.
Clown Pleco
4" | Single| 30 gal

PH 6.5 - 7.5 | Peaceful
Labyrinth Pleco
4" | Single| 30 gal

PH 6.5 - 7.5 | Peaceful
Gold Marble Bristlenose Pleco
6" | Single| 30 gal

PH 6.5 - 7.8 | Peaceful
Queen Arabesque Pleco
4" | Single| 30 gal

PH 6.5 - 7.5 | Peaceful
Longfin Blue Eye Lemon Bristlenose Pleco
6" | Single| 30 gal

PH 6.5 - 7.8 | Peaceful
Mega Clown Pleco
3" | Single| 20 gal

PH 6.5 - 7.5 | Peaceful
Dalmatian Pleco
12" | Single| 75 gal

PH 6.5 - 7.5 | Peaceful
Albino Bristlenose Pleco
6" | Single| 30 gal

PH 6.5 - 7.8 | Peaceful
Leopard Cactus Pleco
12" | Single| 75 gal

PH 6 - 7 | Peaceful
Leopard Sailfin Pleco
18" | Single| 100 gal

PH 6.5 - 7.5 | Peaceful
Gold Nugget Pleco
9" | Single| 55 gal

PH 6.5 - 7.8 | Peaceful
Green Phantom Pleco
6" | Single| 30 gal

PH 6.5 - 7.8 | Peaceful
Dull Eyed Royal Pleco
18" | Single| 100 gal

PH 6.5 - 7.5 | Peaceful
Common Pleco
18" | Single| 100 gal

PH 6.5 - 7.5 | Peaceful
Super Red Bristlenose Pleco
6" | Single| 30 gal

PH 6.5 - 7.8 | Peaceful
Leopard Frog Pleco
4" | Single| 30 gal

PH 6.5 - 7.5 | Peaceful
Orange Rose Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Pristella (X-Ray) Tetra
2" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Glass Bloodfin Tetra
2" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Bucktooth Tetra
5" | 8 or more | 55 gal

PH 6-7.2 | Aggressive
Congo Tetra
4" | 6 or more | 30 gal

PH 6-7.5 | Peaceful
Elegant Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Silvertip Tetra
2" | 8 or more | 20 gal

PH 6-7.5 | Peaceful
Black Skirt Tetra
3" | 6 or more | 15 gal

PH 6-7.5 | Peaceful
Red Phantom Tetra
1.5" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Black Phantom Tetra
1.5" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Lemon Tetra
2" | 6 or more | 20 gal

PH 6-7.5 | Peaceful
Longfin Serpae Tetra
2" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Serpae Tetra
2" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Ember Tetra
1" | 6 or more | 5 gal

PH 6-7.5 | Peaceful
Black Neon Tetra
1.5" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Black Emperor Tetra
2" | 6 or more | 10 gal

PH 6.2-7.2 | Peaceful
Gertrude’s Rainbowfish
1.25" | 6 or more | 20 gal

PH 6 - 7.5 | Peaceful
Threadfin Rainbowfish
2" | 6 or more | 20 gal

PH 6 - 7.5 | Peaceful
Red Rainbowfish
5" | 6 or more | 30 gal

PH 7 - 8 | Peaceful
Turquoise Rainbowfish
4" | 6 or more | 30 gal

PH 7 - 8 | Peaceful
Dwarf Neon Rainbowfish
3" | 6 or more | 30 gal

PH 7 - 8 | Peaceful
Celebes Rainbowfish
2.5" | 6 or more | 30 gal

PH 7 - 8 | Peaceful
Celebs Halfbeak
4" | 1-3 group | 30 gal

PH 6.8-7.5 | Peaceful
Wrestling Halfbeak
3" | 1-3 group | 20 gal

PH 6.8-8 | Peaceful
Orange Australe Killifish
2.5" | 1-3 | 10 gal

PH 6-7.5 | Peaceful
Marbled Hatchetfish
1.75" | 6 or more | 20 gal

PH 6-7 | Peaceful
Silver Hatchetfish
2.25" | 6 or more | 20 gal

PH 6-7 | Peaceful
Giant Gourami
18" | Single | 200 gal

PH 6.5-8 | Aggressive
Kissing Gourami
6" | Single | 50 gal

PH 6.5-7.5 | Aggressive
Paradise Gourami
2.5" | Single | 20 gal

PH 6-8| Aggressive
Sunset Honey Gourami
2.5" | Single | 10 gal

PH 6-7.5 | Peaceful
Sunset Thicklip Gourami
5" | Single | 30 gal

PH 6-7.5 | Peaceful
Croaking Gourami
2.5" | Single | 10 gal

PH 6-7.5 | Peaceful
Licorice Gourami
2.5" | Single | 20 gal

PH 4-6.5 | Peaceful
White Spade Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
White Elephant Ear Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
White Rose Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
White Crown Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Yellow Plakat
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Yellow Rose Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Yellow Feather Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Blue Feather Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Blue Half Moon Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Blue Double Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Blue Rose Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Powder Blue Plakat
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Red Rose Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Red Feather Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Red Crown Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Orange Half Sun Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Dalmation Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Mustard Gas Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Cambodian Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Butterfly Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Dragon Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Marble Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Bi-Color Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Plakat Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Rose Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Feather Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Over-Half Moon Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Half Moon Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Super Delta Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Delta Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Half Sun | Comb Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Crown Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Double Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Spade & Round Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Koi Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Red Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Veil Tail Betta
3" | Single | 5 gal

PH 6.5-7.5 | Aggressive
Lavender Gourami
5" | Single | 30 gal

PH 6-7.5 | Peaceful
Blue Gourami
5.5" | Single | 30 gal

PH 6-7.5 | Peaceful
Three-Spot Gourami
5" | Single | 30 gal

PH 6-7.5 | Peaceful
Opaline Gourami
6" | Single | 30 gal

PH 6-7.5 | Peaceful
Dwarf Powder Blue Gourami
3" | Single | 10 gal

PH 6-7.5 | Peaceful
Chocolate Gourami
2.5" | 6 or more | 30 gal

PH 4-6 | Peaceful
Pearl Gourami
5" | Single | 30 gal

PH 6-7.5 | Peaceful
Dwarf Gourami
3" | Single | 10 gal

PH 6-7.5 | Peaceful
Honey Gourami
2.5" | Single | 10 gal

PH 6-7.5 | Peaceful
Zebra Pleco
4" | Single| 30 gal

PH 6.5 - 7 | Peaceful
Clown Loach
12" | 5 or more | 75 gal

PH 6.5 - 7.5 | Peaceful
Geophagus
9" | Single | 55 gal

PH 6 - 7 | Peaceful
Bristlenose Pleco
6" | Single| 30 gal

PH 6.5 - 7.8 | Peaceful
Polka Dot Loach
4" | 5 or more| 30 gal

PH 6 - 7.5 | Peaceful
Zebra Loach
4" | 5 or more| 30 gal

PH 6 - 7.5 | Peaceful
Black Kuhli Loach
4" | 3 or more | 20 gal

PH 6 - 7.5 | Peaceful
Kuhli Loach
4" | 3 or more | 20 gal

PH 6 - 7.5 | Peaceful
Indian Galaxy Loach
3" | single | 30 gal

PH 6.5 - 7.8 | Peaceful
Yoyo Loach
3" | 5-6 | 30 gal

PH 6.5 - 7.8 | Peaceful
Slate Corydora
2.25” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Schwartz’s Corydora
1.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Habrosus Corydora
1.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Horseman Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Super Parallelus Corydoras
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Fairy Corydoras
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Julii Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Bandit Corydora
2” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Green Laser Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Pepper Corydora
1.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Sterbai (Sterba’s) Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Skunk Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Duplicate Corydora
2” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Purple Pencilfish
2" | 8 or more | 10 gal

PH 6.5 - 7.2 | Peaceful
Boesemani Rainbowfish
4" | 6 or more | 30 gal

PH 7 - 8 | Peaceful
German Blue Ram
2.5" | Single | 20 gal

PH 6.5 - 7.5 | Peaceful
Zebra Danio
2.5" | 5 or more | 10 gal

PH 6.5 - 7.5 | Peaceful
Black Harlequin Rasbora
1.5" | 6 or more | 10 gal

PH 6-7.2 | Peaceful
Bloodfin Tetra
2" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Cherry Barb
2” | 6 or more | 10 gal

PH 6-8 | Peaceful
Orange Zebra Otocinclus

2” | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Silver Otocinclus

2” | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Golden Otocinclus

2” | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Zebra (Tiger) Otocinclus

2” | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Dwarf Otocinclus

2” | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Otocinclus

2” | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Emerald Dwarf Rasbora
1.5" | 6 or more | 20 gal

PH 7 - 8 | Peaceful
Rosy Loach
1.25" | 8-10 | 30 gal

PH 6.5 - 7.8 | Peaceful
Sparkling Gourami
1.5" | Single | 10 gal

PH 6-7 | Peaceful
Leopard Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Green Neon Tetra
1.25" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Gold Neon Tetra
1.25" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Celestial Pearl Danio
3/4" | 6 or more | 10 gal

PH 6.5 - 7.5 | Peaceful
Neon Tetra
1.25" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Neon Blue Goby
3” | Single | 10 gal

PH 6.5-7 | Peaceful
N Class Endlers
1.75" | 6 or more | 10 gal

PH 6.8-8 | Peaceful
El Tigre Endler
1.75" | 6 or more | 10 gal

PH 6.8-8 | Peaceful
Blue Star Endler
1.75" | 6 or more | 10 gal

PH 6.8-8 | Peaceful
Daisy’s Blue Rice Killifish
1.25" | 6 or more | 10 gal

PH 6-7.5 | Peaceful
Gold Lyretail Molly
4.5" | 4 or more | 20 gal

PH 7-8.5 | Peaceful
Pygmy Corydora
1” | 4 or more | 10 gal

PH 6.5-7.3 | Peaceful
Green Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Albino Aeneus Corydora
2.5” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Siamese Algae Eater

7” | Single | 20 gal

PH 6-7.5 | Peaceful
Panda Corydoras
2” | 6 or more | 20 gal

PH 6.5-7.3 | Peaceful
Harlequin Rasbora
2" | 6 or more | 10 gal

PH 6-7.2 | Peaceful
Green Cobra Guppy
2.4" | 6 or more | 10 gal

PH 6.8-8 | Peaceful
Dwarf Pea Puffer
1" | 1 or 6+ | 5 gal

PH 7.2-7.5 | Aggressive
Red Honey Gourami
2.5" | Single | 10 gal

PH 6-7.5 | Peaceful
Dwarf Flame Gourami
2.5" | Single | 10 gal

PH 6-7.5 | Peaceful
Clown Killifish
1.5" | 1-3 group | 5 gal

PH 6-7.5 | Peaceful
Rummy Nose
2” | 6 or more | 10 gal

PH 6-7 | Peaceful
Odessa Barb
3" | 5 or more | 30 gal

PH 6-8 | Semi-Aggres.
Tiger Barb
3” | 6 or more | 30 gal

PH 6-8 | Semi-Aggres.
Cardinal Tetra
2" | 6 or more | 10 gal

PH 6.2-7 | Peaceful