Can bichirs live with tinfoil barbs?

Verdict
Yes

Yes. Bichirs and tinfoil barbs make a good pair. Both are fine at 72–80°F. Plan on at least 125 gal.

BichirBichir72–82°F · pH 6.5–7.5 Tinfoil barbTinfoil barb72–80°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–80°Bichir 72–82°Tinfoil barb 72–80°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Bichir 6.5–7.5Tinfoil barb 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Bichir · 12 inTinfoil barb · 12 in0"2"4"6"8"10"12"
Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

BichirTinfoil barb
Temperature72–82 °F72–80 °F
pH6.5–7.56.5–7.5
Adult size12.0 in12.0 in
Minimum tank75 gal125 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomMiddle
GroupAlone or in pairsGroups of 5+
DietCarnivoreOmnivore

Better tank mates for bichirs

All bichir tank mates

Better tank mates for tinfoil barbs

All tinfoil barb tank mates

Questions

Can bichirs live with tinfoil barbs?

Yes. Bichirs and tinfoil barbs make a good pair. Both are fine at 72–80°F. Plan on at least 125 gal.

What temperature suits both bichirs and tinfoil barbs?

72–80 °F. Bichirs need 72–82 °F, tinfoil barbs need 72–80 °F.

What size tank do bichirs and tinfoil barbs need together?

At least 125 gal, set by the tinfoil barb. Add space for each extra fish.