Name: Synodontis eupterus
Origin: Central Africa
Synodontis eupterus can reach about 20 cm, not counting the tail fin. They are not really predatory, but will eat fish eggs, snails, etc. I'm not sure about real small fish. They can be territorial/aggressive, especially towards other bottom feeders. Mine is in with cichlids...and he occasionally chases them. Mine also took a disliking toward a particular Pleco that I had...and beat him half to death. But he gets along fine with his current Pleco tankmate. I hope that I didn't scare you too much. Here is some good news about the species. They are very long-lived, when properly cared for. Mine is eighteen years old...he's a bit ragged looking/battle scarred (from stealing cichlid eggs) but he seems to be doing well. I feed mine Hikari Sinking Carnivore Pellets, Hikari Sinking Tropical Wafers, Algae Wafers, Frozen Brine Shrimp, and shrimp pellets. I feed him every other day...after I turn out the lights. S. eupterus are very adaptable, as far as water chemistry. My water is extremely hard and alkaline (pH 8.6).
I currently have a pair of Synodontis eupterus in my 350 L cichlid tank. I have found that they are extremely aggressive towards each other as well as to other catfish. I have 2 upside down cats that are forced into the mid level of the tank. They seem to get along fine with my cichlids, and my Polypterus senegalus. They also seem susceptible to Ich, they are usually the only fish in the tank to get it. Still they are an attractive, fun fish that I would recommend to anyone looking to add variety in an aggressive environment.
I have two of these fish. They are both over 10 years old. They romp and play all day long in their tank. They are in with a variety of Cichlids. None of my Cichilds have bred since being added to this tank. I have never seen them eat the eggs, but I fear that that is what is happening. They eat flake food right along with my Cichlids. Everyone comments on their size and their beauty, as well as how active they are all day long. These are a great fish to have, but you need at least a 200 L or greater tank size. The tank they live in is 570 L.
We have a Synodontis eupterus called Lancelot (due to the fact that he lanced - a lot!) and he is a brilliant part of the tank, although very moody. We had to evict his fellow room mate that was a little smaller and got a constant unrelenting pounding! He also has taken an instant dislike to one of our Plecos, but is fine with the rest of the fish. He is hardy, our water pH is 7.0, we have had him less than 1 year and he has grown from tiny to 20 cm - he seems bigger every week! He eats catfish pellets, algae wafers and flake foods. We also have suspicions about the overnight disappearence of several small neon tetras - combined with a sudden lack of appetite the following day. We wouldn't be without him especially when he does a lap of the tank scattering fish and rocks in all directions when we have unsuspecting visitors - he raises the odd eyebrow before disappearing back into his cave.
My three Eupterus cats run about 18 cm long. I still haven't figured out why they're so expensive at my LFS's - about $15 for a 5 cm fish. They are housed in an 830 liter tank with 2 Managuense cichlids (Male ~33 cm), a 20 cm black shark, a 30 cm giraffe catfish (very nice fish). I have not noticed any major problems with aggressiveness from these fish. They seem to direct all of their attention to each other and following / playing / chasing each other about the tank most of the time. They eat a variety of pelleted foods with their favorite being some sinking cichlid pellets.
I've had one of these beautiful cats for 6 years. I purchased a second one about 2 years ago when I upgraded to a larger tank. They get along very well with each other and all tank-mates. Sinking shrimp pellets are their everyday food of choice. They will come to the top of the tank for frozen brine shrimp and frozen blood worms.