Black Ghost Knifefish Tropical Fish Information

Apteronotus albifrons
Black Ghost Knifefish
Behaviour Normally peaceful but individuals may be aggressive, timid
Typical size 30cm
Max size 50cm
Tank Area Middle, all
Min Tank Size 120cm
Temp Min: 23℃ Max: 28℃
Feeding Meaty, sinking, live, frozen foods, May take dried foods
pH Range 5.5-8.5
Hardness vs,s,m,h,vh
Black Ghost Knifefish Apteronotus albifrons
  • Black Ghost Knifefish Apteronotus albifrons - thumbnail

Black Ghost Knifefish (Apteronotus albifrons)

Black Ghost Knifefish Tropical Fish Learn all about the Black Ghost Knifefish's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Black Ghost Knifefish is the right fish for your aquarium.

This stunning fish is a wonder the first time it is seen, and many aquarists have mistakenly bought the fish on impulse, not realising it can grow up to 50cm (normally 30-40 in aquaria) In most cases the fish is peaceful and somewhat shy, although specimens will become very trusting with their owners. Aggression may occur between individuals so they are best kept singly. Tankmates should be large, peaceful, and not overly active. In common with other ghost knifefish, water quality must be kept in top condition with good filtration, and the aquarium should have plenty of hiding spots. May be sensitive to some chemicals or treatments. The Black Ghost Knifefish is a great display fish for large aquariums.

This fish is excluded from the Compatibility Checker as it is unsuitable for community aquariums or may require expert care.

Black Ghost Knifefish Facts

Family Apteronotidae (Ghost knifefishes) | Synonyms Gymnotus albifrons, Sternarchus albifrons, S. lacepedii, S. maximilliani, Apteronotus passan | Other names Apteronotid Eel, Black Ghost | Origin South America; Venezuela, Paraguay, Brazil, Peru, Guyana | Natural Water Conditions pH 6-8, very soft to hard | Natural Habitat Fast flowing waters, normally with sandy substrates

Black Ghost Knifefish Help and Advice

If you have a question about keeping Black Ghost Knifefish's then please use our Black Ghost Knifefish help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

Check Tankmates for the Black Ghost Knifefish fish species

Create a test community that includes the Black Ghost Knifefish fish species and other types you'd like to introduce - Assess tank size suitability based on filter type and volume, possible negative interactions and warnings.

Please check your water type for compatibility with your fish, which can be found on the Black Ghost Knifefish information box.
Tank Details
question mark  Rename your tank:
question mark  Length: (cm)
question mark  Volume: (Litres)
question mark  Filter type:

* Recent changes to stocking & filter advice October 2018
* This fishtank will only last for this session - to save your tank please Join/Log in

question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm
There are no fish in your fishtank. To add fish, view a fish profile and click the 'Add to My Fishtank' button

If you'd like to talk about the "Black Ghost Knifefish" with our users, then we have a buzzing community of fish enthusiasts where you can talk about tank issues, Black Ghost Knifefish fish behaviour, Black Ghost Knifefish tank stocking and any other issues related to the Black Ghost Knifefish fish or other types you may have.

To save your details in the Fish Community Creator you must be logged in CLICK HERE to log-in or join

Help us keep great tools like this online by becoming a think fish supporter . You will help with our hosting and development costs. From as little as £1.16 per month - Become a Supporter today

Click to read the Latest Tropical Fish discussions from Thinkfish users.

Think Fish Tropical Fish Forum
Tropical Fish Market Place
Fish of the month

Helping Fishkeepers With Their Fishkeeping Needs Since 2006