Most of the Bichirs were introduced as large adults to the Oscar when it was about 25-30.
Since the Oscar has grown, I have added numerous smaller Bichirs, and larger ones.
My Dats, Oscars, and upper jaw Bichirs tank:
My Gar, 44cm Oscar and lower jaw Bichirs tank:
Here is "Ozzy" in full glory:
Other tanks are
1. Black Arowana + Juruense cat + lower jaw and larger upper jaw Bichirs
2. Asian Arowana + Gar + lower jaw Bichirs
3. Upper jaw Bichirs only
4. Upper/Lower jaw Bichir + gar + Tigrinus growout (all small juvis)
5. small quarantine/hospital tank (currently housing 3x 3" juvi Rope fish).
Then there are the Snakehead tanks, which I wont get into!
Never had any problems with any of the mixes of fish here.
Since the Oscar has grown, I have added numerous smaller Bichirs, and larger ones.
My Dats, Oscars, and upper jaw Bichirs tank:
My Gar, 44cm Oscar and lower jaw Bichirs tank:
Here is "Ozzy" in full glory:
Other tanks are
1. Black Arowana + Juruense cat + lower jaw and larger upper jaw Bichirs
2. Asian Arowana + Gar + lower jaw Bichirs
3. Upper jaw Bichirs only
4. Upper/Lower jaw Bichir + gar + Tigrinus growout (all small juvis)
5. small quarantine/hospital tank (currently housing 3x 3" juvi Rope fish).
Then there are the Snakehead tanks, which I wont get into!
Never had any problems with any of the mixes of fish here.