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.
3Other/Mixed Breed
I have loads of Rainbow Kribs forsale ready now collection only male and female lovely babbies and grown on well 4 for £8
Other/Mixed Breed
Fluvel Flex LED 123L tank with 8 fish including large sucker fish. Comes with new heater, new filters & transport bags
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Comes with lots of decors It does have a few Guppies and one gourami. Heater air pump gravel Fluval 206 external filter (no media trays) working well without trays
7Other/Mixed Breed
gouramis-4£, tiger barbs-3£ mollies-1£ sword tail-2£ two goldens-3£ All fishes for bring your own bag or container
Other/Mixed Breed
I have a Juwel Rio 125 LED tank bought March 2025. All fish, nerite snails, rabbit snail, shrimp, plants, accessories are included along with any left over food, filters and the like as I sadly don't
15Other/Mixed Breed
PLEASE READ THE WHOLE ADVERT!! I have a cute & healthy batch of axolotls 4 months old & ready to go!! Morphs are: Dirty Leucistics Leucistic Golden Albinos Leucistic Albinos Melonoid Leucistics/wil
5Other/Mixed Breed
Babies from our (unrelated) leucistic and wild type axolotls. Hatched over the last week (from 26/03) and all are individually tubbed, eating baby brine shrimp with water changed daily. Please not
41Other/Mixed Breed
All different ages, sex, colours and patterns. Can do a multi buy deal ☺️ Ready to go Please bring a suitable container to put them in
1Other/Mixed Breed
We are selling two tanks with tropical fish. There are guppies, neons and some others I don’t know the name of. They both need to go together. The tanks are in need of a clean as the owner has left th
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Female BD ray Very active eats prawns, mussels and pellets 12 inch disc Fast growing and very stable £400 Reading Berkshire Whatsapp for videos 07455330110 Jeff