Mixed breed or hybrid aquarium fish are produced when two closely related species cross-breed, either naturally in a shared tank or through deliberate selective breeding. Some of the most familiar hybrid fish in the hobby include the Parrot Cichlid, the Blood Parrot, and the Flowerhorn Cichlid, all of which were developed through selective hybridisation for their unusual body shapes and vivid colouring. Natural hybrids also occur among livebearers such as guppies, mollies, and swordtails, which can readily interbreed when housed together, producing offspring with varied fin shapes and colour patterns.
Hybrid fish can display a wide range of appearances and temperaments depending on their parent species, and they often exhibit hybrid vigour — a tendency towards robust health and faster growth than either parent line. However, they are generally not suitable for breeding programmes aimed at maintaining pure species lines, and many aquarium societies discourage their sale alongside pedigree stock. For casual fishkeepers, mixed breed fish can be excellent and characterful aquarium inhabitants, offering unique appearances and interesting behaviour at competitive prices. As with all aquarium fish, their care requirements depend on the parent species involved, so researching the likely traits of both parent breeds — water chemistry preferences, diet, tank size, and compatibility with other fish — is important before purchase.
42Other/Mixed Breed
Fish and unit unit 3 month old cost £240 comes with everything u see in picture including fish 3 black knife ghost fish costing over £120 plus meny more fish 3 filters and uv bulb plenty off orimen
1Other/Mixed Breed
Axolotl for sale Only couple months old Selling due to wanting more of a tropical tank Open to trades for tropical fish
385Other/Mixed Breed
Manchester Pet's and Aquatics, 66-70 Stockport Road, Manchester, M126AL Open 7 days a week, 363 days a year. Updated 18/09/26 Aquatic Stock List **Tropical Section** *Tetra/Characin* Flame Ember Ca
4Other/Mixed Breed
Unsexed axolotyls as they cannot be sexed until they are 1yr old. £15 Each. Two wild (brown) colour. One leucistic colour which is albino (white) with black eyes. Mum and Dad shown in photos. Able to
1Other/Mixed Breed
Approx 3 inches. Good for wasting algae and hair algae. Too large for my tank now and reducing what I have in there. In food health no concerns. Can send more pics on request.
3Other/Mixed Breed
Axolotl and tank set up for sale There's a crack in the glass but its been repaired and doesn't affect it
8Other/Mixed Breed
Endlers, salt and pepper Corey, black Corey, proven sword tails, African dwarf frog, kuhli loaches, female betta LOADS of live plants, spare filters and heaters and medication. Literally everything yo
22Other/Mixed Breed
£1 each or 10 for £8 Beautiful guppies for sale. Multiple colours, easy fish to rebreed. They grow very fast and reproduce just as fast! Grab a bargain
2Other/Mixed Breed
Danios, long fin Danios, cloud minnows and weather loach x2. All really healthy no issues. Being kept in a 70 litr tank at the moment. Moving house and cant take the aquarium as its too big
6Other/Mixed Breed
55ltr Tank, complete with various breed of fish, Substrate, filters, food and buckets for transporting and cleaning. Do not ask for individual fish as this is a job lot only.