Here's the rule regarding "other Fish"

3 CSR 10-6.550 Other Fish
PURPOSE: This rule establishes seasons,
methods, and limits for taking all other fish.
(1) Daily Limit: The daily limit for fish,
other than those species listed as endangered
in 3 CSR 10-4.111 or defined as game fish,
is fifty (50) in the aggregate, if taken by pole
and line, trotline, throwline, limb line, bank
line, jug line, or underwater spearfishing.
The daily limit if taken by gig, atlatl, bow,
crossbow, snaring, snagging, or grabbing is
twenty (20), in the aggregate. Bighead carp,
common carp, goldfish, grass carp, and silver
carp may be taken and possessed in any
number

And further down in this section it states:

(3) Fish taken under this rule may be used as
bait; except that bowfin, or parts thereof
(including eggs), may not be used as bait.

So if you have larger bluegill from a reservoir or stream, you can have 50 over 5 inches and 150 under 5 inches. And if you need that much bait to catch a limit of cats, something is wrong! If you are fishing in a smaller lake for bait, it must be pole and line only, unless it's for shad, and the "other fish" limit is
20. If you catch a bluegill or other sunfish larger than 5" by any means other than pole and line it must be returned to the water unharmed regardless of where you catch it. Hope this is clearer than mud!