Tropical Fish Keeping - Aquarium fish care and resources

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BettaMom 02-03-2007 09:03 PM

Elephant Nose Knife Fish
Does anyone have experience with these guys? How big do they get and what is their attitude like? Are they as aggresive as Black Ghost Knives?


Lupin 02-04-2007 11:10 PM


Elephant Nose is not a knife fish.:) It is part of the family, Mormyridae. Peter's Elephant Nose is the proper name for this fish. No, they don't get really aggressive against other species but are territorial with other members of their own species. I would not mix them with other bottom dwellers as they often release weak electric charges which can annoy other fish. They are best kept alone in a tank with subdued lighting as they often do not tolerate the presence of members of their own species. A 30 gallons is the minimum I would suggest. They can reach 20-30 cm in size.

Note that they are scaleless fish so be careful when treating your fish with medications. I would advise you ask other people's opinions before carrying out treatments if ever needed.

Good luck.:)

Edit: I moved your thread to Ancient Fish as Elephant nose are oddballs, not livebearers. Were you referring to this fish?

*Reposted to get rid of double forum error.*

sean117Ply 05-13-2007 07:46 PM

I would not recommend an elephant nose fish.

1. they are very picky eaters, they may not even eat.

2. Other fish scare them so they will hide allot of the time (unless kept alone).

3. As what Lupin said they are scaleless so are sensitive to water conditions.

I have kept them before but never again, they are just not a hardy fish to have in a home aquarium.

Lt.Dan 05-14-2007 05:49 PM

I wouldn't recommend them either i did some research when I thought of getting one, but i found out a lot.

1. their electric pulses annoy or even provoke other fish with electrical pulses.
2 They are picky eaters.
3. almost every type of medication except specially designed meds for them, will kill them.

although i have seen people with a male and female that dont bother each other, so as for the little tolerance thing, I'd disagree.

Antman 05-04-2009 04:15 AM

Re: Elephant Nose Knifefish

Originally Posted by Lupin (Post 38870)
Elephant Nose is not a knife fish.:) It is part of the family, Mormyridae.

Just for the record, there is an Elephant Nose Knifefish, Sternarchorhynchus oxyrhynchus, and it was first described in 1849 by Müller & Troschel. For nice, detailed photos, check out the following link: Elephant-nose knifefish
As you can see from the photos it's quite a different fish than Mormyrus petersii.

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