Well i've had fish for over 8 years. I have not been able to keep bottom dwellers for more than 1 month except for 1 catfish.
about 4 years ago i setup a 240 gallon.
Here are my inhabitants:
16" Arowana (1x)
24" black Arowana (1x)
4-7" Uaru A. (5x)
6" D. Sexfasciutus (1x) <---is that how you spell it
8" Green severum (1x)
5" Wild severum (1x)
5" Red severum (1x)
5" Gold severum (1x)
8" Rotkeil Severum (1x) <--- for sale anyone?
4" Widebar dat (2x)
These are the catfishes and pleco's that have lost their lives in my 240 gallon tank:
Common Pleco (7") <-----yes a common pleco died in my tank, how odd is that?
Gold Nugget Pleco (5")
Tiger Pleco (7")
Red Tail Catfish (6")
Tiger Shovel Nose Catfish (12") <---this fish is the longest lasting of all the bottom dwellers (3 years)
Lima Shovel Nose Catfish (10")
Tigrinus Catfish (10") <---the death of this one broke my heart. the 4th biggest lost in my tank.
Jurenese Catfish (4")
All these fishes were not too big to fit in any of my fishes mouths during the time I've had them. I've even seperated some of them with a divider.
My water quality is 0 across the nitrate, nitrite, and ammonia charts. My PH is 6.0. I do water changes every other week. I feed every other day (with the tigrinus and jurense i hand fed them shrimp).
My filtration is a 30 gallon wet/dry with more bio balls than it is suppose to hold, and a fluval fx5 with all 3 baskets filled with ceramic rings.
I spend the whole day acclimating each new fish using the drip method because I know a lot of fish stores and people I buy fish from have higher PH.
Now when these fish die, I've yet to see an injury on them. My fish don't even pick on the dead fish when they die.
I feed all kinds of pellets 95% of the time, dried shrimp 2%, crickets 2%, market prawns 1%.
So now I think a bichir might be able to survive in their. That is if it will eat pellets too. I don't have a problem feeding them shrimp, but I'd prefer my fish to eat pellets. I don't feed my fish feeders at all. They probably never seen a feeder.
Sorry for this long post.