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.
6Other/Mixed Breed
210Litre tank for sale Fish for sale too ×4gold sevurms ×1talking catfish ×1pleco ×2clown loaches Tank comes with heater and external filter too prefere all to go together happy to seel separate but
Other/Mixed Breed
Very healthy 7 month old axolotls Lovely and healthy Eating well. mainly earth worms Mum is copper Mel and dad is dirty Lucy
21Other/Mixed Breed
I have too many guppies in my tank and need some fry gone asap. There’s a mix of different breeds in there so which colour you get will be random. feel free to message for how many you’d like
4Other/Mixed Breed
250l fish tank and stand including fluval heater and filter, co2 tank ,fluval smart bluetooth light plus various fish and accessories looking for 300 ono
6Other/Mixed Breed
2x Tiger oscars 1x giant silver paku 2x Albino Paku 1 xlarge grey Paku 1x large snakehead 4/5x red belly piranha 2/3xPlecko 1x jaguar cichlid 1x red fish similar to the jaguar (Possibly 3 catfish) £
4Other/Mixed Breed
2 male axolotl been together since babies. Healthy eating bloodworms meal worms. Going together 60 for both no tank just the axolotls collection only s65 east herringthorpe Can sell tank and filter w
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
11Other/Mixed Breed
4ft marine tank complete with heater wavemaker fx6 filter ro machine 3 containers for water food api test kits live rock maxspect led lighting system few fish included to many things to list buyer
4Other/Mixed Breed
Tropical fish for sale closing down coffee table tank 1 large parrot fish 1 syno black cat fish 1 black plec also have the tank there in which is a coffee table tank comes with lights pump and some b
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
3Other/Mixed Breed
2 black axolotls they would need to stay together only getting rid as havent got the room for a tank
3Other/Mixed Breed
Black Moscow Guppies mixed sex. Raised in our own aquarium. Looking for good homes for them to thrive in
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.
4Other/Mixed Breed
Juvenile axolotls, Gold, Lusistic,Albino and Brown ready for new homes. This batch started hatching in February this year and ive been feeding water changing them on a daily basis. Preferred collec