I dont think so. U literally got 1 member saying that its fine, and two sayings it is not.
you bought it on impulse as you yourself said, so why now say that it was a decision you made after asking?
the tank is to small for long period both of those fish in my opinion. If you google :
senegal: 60″ x 24″ x 24″ (150x60x60cm) – 540 litres. (
https://www.seriouslyfish.com/species/polypterus-senegalus-senegalus/)
ctenopoma : at least
120 ∗ 30 cm(
https://www.seriouslyfish.com/species/ctenopoma-acutirostre/)
its good that your helping that fish but it isnt a great house for a long period. Try to look for a bigger tank or a better house if possible in the future.
Its great your saving a fish, but on the long period you are not helping those fishes in that tank atleast.