Predator fish for 40 gallon

[twentyleagues]

how many exodons would fit in the tank? Which species of killlis cause I have no idea which ones get big or not

I'd say 8 exodons. Golden wonder killi is pretty good size I think 4", stripped panchax, blue panchax there are others also.

 

[The guy of fish]

Blue gularis killifish look nice, do they get big? If I were to get exodons what should I feed them as a staple with minnows as an occasional treat?

 

[twentyleagues]

Blue gularis killifish look nice, do they get big? If I were to get exodons what should I feed them as a staple with minnows as an occasional treat?

Pellets. I think they get around 4".

 

[The guy of fish]

What about creek chubs or grass pickerel.

 

[Raka]

Gulper Catfish, but would require more water changes.

 

[The guy of fish]

Grass pickerel really catch my attention can they go in this tank?

 

[Fishnerd360]

I’ll say no, they get 14 inches which is quite big for a 40 gallon.

 

[The guy of fish]

Really? I heard that they rarely get past 9 inches in the aquarium.

 

[Fishnerd360]

Oh, you might be right, I only remember the size of them I seen at public aquariums.

 

[duanes]

The tank has a filter for 75 gallons of water and another filter meant for 45 gallons. I do 30% water changes every other week I’m looking mainly for a singular big fish (not really that big) or maybe 2 moderately sized fish.

The wimpy water change schedule would (to me) restrict the type fish you keep to swamp, or rice paddy type, that tolerate less than stellar water quality.
For fish that require high water quality I do 30-40% water changes every other day.
I find the idea of a 9" fish in a 40 gallon tank, inhumane.