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.
61Other/Mixed Breed
Needing a bigger tank now or bigger tank mates at least. Growing rapidly with lots of growing to do. Great fun to watch but we want a peaceful tank. All about 15-20cm long. Will sell separately for £
3Other/Mixed Breed
Multiple guppys for sale Tank clearance Need to see them gone. Tiny to adults Mostly male Various colours Various prices but have put £2 each
6Other/Mixed Breed
I got 4 ft fluval 240 for sale. Fish is community small. Got 3 different space of Daniel 4 key hole About 6 silvertips Common pleck Rainbow fish And petricola catfish. No filter or heating and deco
10Other/Mixed Breed
Puffer fish, loach, minnows, spiders, dart frogs, scorpions, and all the tanks and heating. Logs plants and can take the stand if required, selling very cheep as its an emergency
31Other/Mixed Breed
£1 each!!! Bargain 😍 I’ve got at least 100 guppies for sale All different ages, colours and patterns (see video) They will be mixed male and female Just bring along a suitable container for them Ple
12Other/Mixed Breed
tank included, will give 2 weeks supply of food ,very low maintenance and good for first pets, they are very active open to sensible offers
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
6Other/Mixed Breed
Young guppies £1 each got loads available
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