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.
12Other/Mixed Breed
Beautfully established fluval shaker tropical tank Comes complete fully stocked with Ballon mollies ( plus babies) Platies (plus babies) Mollies (plus babies) Neons Danios 2 algae cleaner fish Shrim
51Other/Mixed Breed
10 healthy Polar Blue Parrotfish for sale, 9 months old. Bright blue colour, active and feeding well. Kept in clean, well-maintained tank conditions. Suitable for tropical freshwater aquariums. Sellin
31Other/Mixed Breed
As they are fry right now they will be ready in 1-2 months. There is a mix of kribensis, as you can see they will be a mix of bright colours like their parents. 1 for £6 prices can be discussed.
353Other/Mixed Breed
Manchester Pet's and Aquatics, 66-70 Stockport Road, Manchester M12 6AL Open 7 days a week, 363 days a year. Updated 19/05/26 Aquatic Stock List **Tropical Section** *Tetra/Characin* Black Neon Glo
10Other/Mixed Breed
Lovely mature aquarium aquascape for sale due to sudden house move. It's a bargain because it needs to go soon... Sad to see it go. Contains everything: Aquarium 240lt (Length : 120 cm, Width : 40
101Other/Mixed Breed
I have two well-maintained TerrAquariums at home with a thriving community of guppies. I started with around 50, and now have over 200 healthy, vibrant fish in many different colours and patterns. I’
Other/Mixed Breed
I have baby axolotl for sale. Currently eating well. Still eating live food so can go when eating frozen food. They are all quite light in colour, possibly dirty Lucy or leuciestic type
31Other/Mixed Breed
Great first start tank comes with rocks filter brand new and male guppys beautiful colours fish tank brand new would be great for a first tank
152Other/Mixed Breed
For sale is a premium, fully established 160L professional aquascaping setup. This is a high-spec "plug-and-play" system featuring top-tier equipment and a healthy, vibrant community of fish and plant
3Other/Mixed Breed
Hello, I got colourful guppies easy to look after Black pair -6£ Citrus/ pair-6£ Red male-3£ Blue femaile -3£ Pink snails 1£ Endler Red fern 1£ Red shrimps 2,5£ These are tropical fish. 2 corodir
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