Max Size: 6cm

Splendid Killifish (Aphyosemion splendopleure)

Splendid Killifish are a very peaceful and hardy species of fish that prefers to be kept in pairs. This fish is not advised for the community aquarium as these fish are very shy and does not compete well with other species. Male Splendid Killifish may be territorial to each other, but rarely any damage is done.

The Splendid Killifish's colours and characteristics depend on the region they originated. The most outstanding feature of the males is the fins. The long fins are often patterned with spots, and the tips often look like they've been dipped in yellow paint. On mature males, these may eventually form long streamers.

The sides of the fish are a mix of colours and usually consists of yellows, greens, blues and reds covered with shimmery luminosity. The females, while they, without a doubt, can't match the males, are nonetheless quite attractive fish. The two lines running along the sides are much more apparent in the females. Apart from faint patterning on the dorsal fin, they share little of the males colour. However, they are still a beautiful fish, and of course necessary for breeding.


Splendid killifish
Splendid killifish
Quick Facts
Scientific NameAphyosemion splendopleure
Other NamesNone
OriginsCameroon, Equatorial Guinea, Gabon
Aquarium LevelMiddle
DifficultyBeginner - Intermediate
Best kept asPairs
Lifespan3 - 5 years
Water Parameters
Water TypeFreshwater
PH6.0 - 7.5
GH5 - 15
TDS54 - 268
71 - 79℉
21.7 - 26.1℃


In the home aquarium, the Splendid Killifish will readily accept most good quality dried foods such as granules, flakes and sinking pellets. These modern food products have been developed to provide all adequate nutrition to maintain your fish's health and dietary requirements.

Providing additional foodstuffs such as live, frozen, and freeze-dried meals such as bloodworm, daphnia, and tubifex once or twice a week will provide additional benefits to your fish's health and well-being but is not a must for this fish.

It should be noted that bloodworms should only be given as an occasional treat and should not be used as the staple diet as they are difficult for fish to digest and can potentially cause blockages.

This fish is an omnivore in the wild, meaning it will consume some vegetable matter. Although most modern fish foods take this into account and include them in their products, you can still supplement your fish's diet with blanched vegetables such as spinach, broccoli, and zucchini. Ensure you do not overfeed your fish and remove any leftovers the following day.

Sexual Dimorphism

It is very straightforward to distinguish male and female Splendid Killifish. Males are usually much more colourful and have elongated caudal, dorsal and anal fins compared to the females.

Other Killifish of interest

American Flagfish(Jordanella floridae)
Blackfin Pearl Killifish(Austrolebias nigripinnis)
Blue Striped Rivulus Killifish(Rivulus Xiphidius, Laimosemion xiphidius)
Bluefin Killifish(Lucania goodei)
Bluefin Notho(Nothobranchius rachovii)
Chevaliers Epiplatys Killifish(Epiplatys chevalieri)
View all Killifish
Date Added: 11/11/2020 - Updated: 10/08/2022 11:24:02