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.
31Other/Mixed Breed
Looking to rehome my 3 axolots... I've raised them from eggs but now just don't have the space for them so would love them to go to a better home! Mum was all black, Dad was pink so these are a mix an
1Other/Mixed Breed
very active fish dose not grow too big and is around 3 inches now eats well and healthy although might be a little nervous in a new home so colours will pop wen settled
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 250 ono
6Other/Mixed Breed
Young guppies £1 each got loads available
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
3Other/Mixed Breed
Includes, 2x make axolotls who are 2 years old. PM for exact type, worm farm, tank and equipment, feeding tongs, 2x 20L tanks to use when doing water changes and a pump to help empty the tank, all acc
7Other/Mixed Breed
Fish looking for new waters 1 yellow parrot fish 1 red parrot fish 1 common plec 1 pearl gorami 1 opaline gorami 4 cordyline tetras 5 tiger barbs Fluval 120ltr tank 80cm wide 49cm high
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
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