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.
1Other/Mixed Breed
bought a fire eel not knowing how fast or large they can grow and currently not planning on getting a bigger tank
3Other/Mixed Breed
Beautiful rope fish for sale. Awesome addition to any tank. We have 5 black neons that live with it in the tank that are for sale as well. Ropefish is approximately 22-24cm long. Collection from E
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
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.
4Other/Mixed Breed
Tropical large fish free to good home, Oscar hasout grow our sons 5ft tank, would need to go to large fish tank. Collection only
5Other/Mixed Breed
Axolotl babies Looking for new homes. Mum albino dad melanoid babies are melanoid, wild, Lucy's albino and golden albino. 3 months old fully transitioned onto pellets earthworms and bloodworms. Ready
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
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
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
5Other/Mixed Breed
12 baby axolotls for sale. They are approximately 3 months old. There are 11 wild type and 1 dirty Lucy type available.