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.
8Other/Mixed Breed
Baby pea mussel/ finger nail clams (pisidium tenuilineatum ) these are tiny but will grow 90p each they are £2.50 else where these are freshwater mussels that unlike other mussels/ clams have no need
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 07/04/26 Aquatic Stock List FISH OF THE WEEK - FLAME, ROSY, YELLOW PHANTOM TETRA
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
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
Other/Mixed Breed
🐠 Premium Full Aquarium Setup for Sale – Aqua One OakStyle 305L – Complete Professional Package Because I have work outside London and it will be very difficult to move such a large setup safely, I a
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