blue gill...

[topoftheline77]

how big of a tank will i need for a single blue gill?

 

[ewurm]

I would say a 40 for one fish, to reach it's full size.

 

[rottbo]

i think that a 20 long would be bare minimum but 40 would be better

 

[topoftheline77]

Is there any type of native fish that will live and thrive in a 16 gallon that will eat smaller fish (i want a predatory fish)?

 

[rottbo]

try a green sunfish they only get 6"

 

[ewurm]

I want one of those. I believe a pumpkinseed is smaller than a bluegill too.

 

[sandtiger]

Bluegill can grow between 10-12", I suggest a 55g. A pumpkinseed can grow between 8-10". There are smaller species of sunfish you can look into, do a search for dollar, banded, blue spotted and black banded sunfish.

 

[ewurm]

You seem to be ridiculously knowledgable about fish, sandtiger. I have three possible explanations:

1. You are an Ichthyologist, and you just like to humor us amateurs.

2. You are the average fishkeeper, but have been doing so for over 150 years.

3. You PM Guppy, he gives you the answer, and you post it.

 

[guppy]

You seem to be ridiculously knowledgable about fish, sandtiger. I have three possible explanations:

1. You are an Ichthyologist, and you just like to humor us amateurs.

2. You are the average fishkeeper, but have been doing so for over 150 years.

3. You PM Guppy, he gives you the answer, and you post it.

On natives I would be PMing him! He is much more knowledgable than I am!

 

[guppy]

On natives I would be PMing him! He is much more knowledgable than I am!

Here are several fish found wild in Wisconsin that don't get real big and will eat guppy sized fish.
Round gobies 5-7"
log perch 5-7"
pirate perch 3-5"
ruffe 5-8" in WI.
3 types of sculpin all to 4-5" max
and troutperch.