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Thanks for information!
Finnish catfishspecialist, who has had these fishes, says in his book, that Acanthomias will grow 30 cm long (max) in aquarium. It can be territorial, but it off course depends on individual. I must say again, that the present owner said, that there has´nt been any problems with this fish. He actually was quite suprised, when I asked, if there has been any problems. In nature Acanthomias grow naturally much bigger than in aquarium conditions. I have planned to put two couples of angelfishes into my tank, four Ancistrus temminkii´s (i dont know the english common names of these fishes), five peppered corydoras, four Colisa lalia´s, three Crossocheilus siamensis ( these fishes I allready have). And hopefully another Syno. I haven´t seen S. longirostris so I dont know what it looks like. S. decorus looks allso very different than Acanthomias, but it allso grows big (max.30cm). Maybe one/ two S. eupterus/ flavitaeniatus/greshoffi with Acanthomias? There are plenty of big bogwood hideout´s in the tank.
-Satu

Ancistrus temmincki (or Ancistrus cf temmincki) is widely known as the Common Bristlenose, referring to the 'tentacles' on the snout of an adult male (they're no whiskers, more sort of a rubbery 'horns').

Nice fish setup btw; how big is the tank?
If you like more syno's, I should get a small group of a smaller species. just two syno's in one tank might evolve into an upperdog and a sorry one, if you get the picture.

Mybe a small group of Flavitaeniatus (3-4) or nigriventris or something?
Decorus is a nice, big syno; but a bit of a slow-moving sissy. It's easily cowed and terrorized by other big Syno's. And it does better in a small group, than single. It's one of the more fragile species of the big Syno's.
Eupterus of course are nearly indestructable, so it might work out, but I still suggest you get more than one of the second syno species, to avoid the number "two" wich is bad news in general, with any territorial catfish genus.

Hope your acanthomias doesn't look like this (from Aqualog), as this is not the real acanthomias.

Situation is now this: I forgot to tell, that I promised to take Acanthomias from it´s present owner, who can´t keep it anymore. His apartment is going to be repaired and fishes have to move temporarily into a smaller tank . So there isn´t enough room for Acanthomias and for couple of Discus. I knew something about this fish before I promised to take it, and I thought, that I can put some other Syno with it. Fish has to leave in two weeks, and I think it would be very unkind to say now : "Sorry, I can´t take it" . So, I think I have to now suffer the consequenses... So this is the whole story. At least, I know it doesn´t eat corydoras!

I have to watch how it goes with other fishes first... But maybe it would be wise to put more than one Syno with it (small ones:)). I have allso two smaller tanks ( 65 l & 140 l, which is now in use ) at home, so I can separate fishes, if necessary.

Fish has little black spot´s on it´s brown-coloured body. I have not seen it yet, because owner has been away on a trip.

-Satu

Silurus wrote:Hope your acanthomias doesn't look like this (from Aqualog), as this is not the real acanthomias.

OK, I can tell this is not S. acanthomias but what IS it? Without having done any research on the question, my first guess would be S. nebulosus.

Dinyar

I believe it's <i>S. courteti</i>, and that the fish labelled as <i>S. courteti</i> in Aqualog is actually <i>S. dorsomaculatus</i>.