Killifish

Killifish as a group comprise over 700 species from most regions of the world. Some are easy to keep in the aquarium, others are difficult. Most are brightly coloured, others, have fascinating behaviour. This site contains the basics on how to keep killies, fish photographs and breeders tips and my own killiblog. This site currently contains 435 pictures of 188 different species. Check out the most recently added killifish images.

Nothobranchius furzeri MOZ99-6
Rivulus rectocaudatus DWTS 08/03
Fundulopanchax nigerianus Makurdi
Simpsonichthys reticulatus
Nothobranchius orthonotus MOZ99-8

Killifish photos


killifish for sale

30 EGGS Lyretail Killifish Aphyosemion Australe HATCHING TROPICAL FISH +FOOD

KHET LAT PHRAO, TH

$8.29


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30+ Eggs of Austrolebias nigripinnis «La Peregrina» (South American Killifish)

GLASGOW, GLASGOW (CITY OF), G53, UNITED KINGDOM

$12.94


Offering 30 eggs of stunning Austrolebias nigripinnis «La Peregrina ARG-APKP 2011-04» (Entre Ríos Province, Argentina). Perfect choice for your outdoor setup! DISCLAIMER: The storage conditions and package handling during transportation are out of our control. We can't be responsible if something went wrong (customs issues, dead eggs on arrival, dissolved eggs, problems with hatching, belly sliders, hatch rate, sex ratio etc.). No refunds will be sent in case of such problems. By winning ... more


Killifish care

Generalisations on keeping killies are somewhat few and far between, as these fish inhabit such a wide range of environmental niches worldwide, and have therefore adapted to very wide range of conditions. Many people have an idea that these fish are difficult to keep, and whilst there are some easy killifish species, there are many that can test the skills of the most experienced fishkeeper. Actually most killifish are quite easy to keep, especially in a species tank (i.e. not a community tank), and the 'difficulties' are more related to breeding them.

However the following generalisations are largely true

  1. Killifish don't live very long
  2. Killifish only eat live food (or frozen live foods)
  3. Killifish don't thrive when housed with other species

So, to succeed at keeping killifish, and to answer the generalisations above, you'll need to: 1) continually breed your fish, 2) continually breed (or collect/buy) livefoods, 3) keep one (or more) tank / species. All of this is time consuming and takes up space. Successful killifish care is not hard, but requires a significant commitment in time. However, unlike many hobbies, there is very little expense required beyond buying starter cultures of livefoods and the eggs/fish themselves.

This website details many of my experiences in killies: hatching eggs, breeding methods, culturing livefoods (grindal worms, whiteworms, fruit flies etc, see foods and feeding)

Types of killifish

The majority of killifish maintained in captivity hail from Southern and Central America, Africa and Asia with limited numbers from Southern Europe, the Middle East and North America. By far the most popular, largely due to their intense colouration, are the annual fish of East Africa and South America, and the non annual fish of West Africa and Central America.

Annual Killifish

Annual killifish are those that live (usually) in temporary waters: pools that dry up on a regular basis. As such, these fish have to cram their life cycle into as a short a period as possible, hatching, growing and reproducing in a few months only. The best examples are the Nothobranchius species of south and east Africa, and the (formerly) Cynolebias species of south America. The eggs of these fish have adapted to survive in the mud of a dried up pool, and are ready to hatch when the wet season starts.

Non-annual Killifish

Species that live in permanent waters are far more akin to other fish species, and are perhaps less of a challenge to the new killikeeper. The best known non-annual killis are the Aphyosemion and Fundulopanchax of west Africa, and the Rivulus species of south and central America.

Killifish conservation

Due to the fact that many killifish species inhabit a very small geographic area, they are particularly susceptible to extinction by habitat destruction. Numerous species are thought extinct, for example Nothobranchius steinforti has not been found since 1976, despite extensive searches. Others, such as Nothobranchius capriviensis are likely to be lost by construction projects that remodel the landscape in which their temporary pools would occur. It is the aim of many killifish keepers and societies to maintain captive populations of as many species as possible, to safeguard against future extinctions. For this reason, it is imperative that fish with known collection data are not cross bred with other similar-looking fish, as this may result in sterility in captive populations.


What's new on killi.co.uk

Nothobranchius furzeri
  • How to keep Nothobranchius: my view on the best ways to keep Nothobranchius: reducing aggression, raising enough females, and having spare males for the community tank in your living room
  • Major site revamp for 2019! After a while in the wilderness, killi.co.uk is back, with a new mobile/tablet friendly design. There are a lot of new photographs to come, nomenclature updates and blog posts. Old features, such as the breeding reports, have been brought up to date; if you've bred a killifish recently, why not fill in a report
  • Brand new blog posting Nothobranchius furzeri 2008 a description, photos and video clips of my latest furzeri hatching.
  • New Nothobranchius description. Two localities of Notho, previously referred to as aff. rubrippinis have been described as Nothobranchius cardinalis
  • Brand new blog posting Nothobranchius sp. Messalo River MZHL 05-12
  • New Nothobranchius species - pictures of the newly collected Zakouma National Park strain of Nothobranchius rubroreticulatus


killifish for sale

(1) 1-1.5" PAIR Gold Australe Killifish Aphyosemion live freshwater tropical

PORTLAND, OREGON, 97213, USA

$16.00


Aphyosemion australe "Gold Australe Killi" Two subadult fish at 1-1.5". We carry the Australe Killi, or Lyretail Panchax, in both “Gold” and “Chocolate” ornamental forms. This killifish is a great selection for new Killi enthusiasts, as it is hardy and fairly long-lived: a lifespan of two to three years is relatively common in well-kept home aquaria. Both of our ornamental varieties have similar coloration patterns; the notable difference is that the base body color of male “Gold” is... more

(1) 1-1.5" PAIR Red Striped Killifish Aphyosemion striatum Live Fresh Tropical

PORTLAND, OREGON, 97213, USA

$18.00


Aphyosemion striatum "Red Striped Killifish" TR Two subadult fish at 1-1.5". Shipping Policies Combined shipping rates are available on all orders. If you have your items in your shopping cart, the Request a Total from Seller button appears when you scroll your cursor over the items in the box at the center of the page. When this option is used, we can then send an invoice with combined shipping. Alternately, open one of the listing pages and click on 'ask seller a question'. You can then ... more

Trio of Archiaphyosemion guineense «Lenghe Curoh SL 93-37» (Rare Killifish)

GLASGOW, GLASGOW (CITY OF), G53, UNITED KINGDOM

$38.82


Offering a pair Offering a trio of rare Archiaphyosemion guineense «Lenghe Curoh SL 93-37» (Northern Province, Sierra Leone) - approx 5 cm. The image used above is for illustration purposes only. If there are any questions you have then please get in touch before you place an order. Thanks for looking!... more