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Nice article! I raised some Ranatra several years ago from eggs found on a piece of floating, very decayed wood in a woodland pond. The eggs were inserted in the wood, but each egg had two spikes on one end, so that there was sort of a bristly patch on the wood. Not knowing what the eggs...

Thanks for the tips! I will have to try it. I've used #16 for all my acrylic stuff so far, but I haven't tried to make anything very big yet.

It's a bichir (Polypterus sp.). I think it's a Senegal bichir, but I could be wrong.

I believe they are. Most tiger masses I have seen have been a good bit larger than that, but those definitely look like Ambystoma eggs, and that's the only Ambystoma you should have out there. Howard Whiteman at Murray State U. has done a lot of work with high-elevation tiger populations in CO.

I agree with Butch; my sirens got gill-nipped a lot when I had Seminole killies in with them. Mudpuppies do all right in a tank if they have a lot of O2 and you keep the temps moderate; they are heat-sensitive, even compared to other salamanders.

Hey Ben, I urge you to stick with option 1. The other fish you mentioned need a larger tank, and trout need a chiller. Besides, small native fish are lots of fun! I haven't kept sticklebacks, but dace are great community fish. Sculpin are a little trickier- they need very well oxygenated...

Do you have plants in the tank? It could be that he ingested some plant matter and is taking a while passing it. I wouldn't worry about it unless it persists for a long time.

You can, within limits. Some species, such as bluegill, redear, and green sunfish get too large or aggressive to be safely kept with certain other species. If this is for your 36 gallon tank, I suggest you avoid the ones I listed. Better options would be: Small to medium, moderately...

To find out what minnows and other fish live around you, use NatureServe's clickable map. You will find different species in different major drainages; for example here's a watershed in the Susquehanna drainage (Upper West Branch Susquehanna), one in the Ohio River headwaters (Youghiogheny), and...

There are plenty of coldwater fish that eat algae, but none that will clean a surface of it the way a pleco does. Native snails are more effective. You have to be careful with snails, though, for a number of reasons. It's better to control the algae by limiting its resources- aquatic plants...

Creek chub can and will eat smaller fish (up to about half their own size), but are not particularly aggressive towards similar-sized fish. If you have two males and they get into breeding condition you might see some aggression.

Your setup should be fine. Darters do spend time in high current areas, but usually aren't directly in the high flow most of the time- they hang out between or behind rocks, etc., out of direct flow. Chrosomus dace spend most of their time in pools, mainly entering riffles to spawn over chub...

If you are serious, get a fine-mesh seine and a couple of helpers. You will catch many fish.

I haven't tried them, but the dwarf crayfish (Cambarellus species) are supposed to be plant-safe. C. schufeldti and C. patzcuarensis are the most commonly available species.

Not to doubt you guys- i know you know your sunfish- but I'm not sure these are pure bluegills. They look a bit redbreast-ish to me, especially the red margins of the dorsal and caudal fins. I wonder if there isn't some mixed parentage.

Minnows are visual; white bread works great. Golden shiners are usually in weedy, slow or still water. They are easy to ID: the lateral line curves downward behind the head, then back up towards the tail. The anal fin has a long base and curved margin. Most other minnows have relatively...

I agree with VF- I have collected pale wild common snappers just like that one. Jloco- it's definitely a common. This side-by-side pic of the two species should help: http://s-ak.buzzfed.com/static/enhanced/web04/2010/6/1/15/enhanced-buzz-2450-1275421581-16.jpg. The common is on the left.

+1. The adipose fin (on the back near the tail) is fused with the caudal (tail) fin. All other North American catfishes have the two fins separate.

The number of toes is easy to count in the third photo. I wish I had a camera handy, I could show you specimens of both species side by side. They are really quite different. I don't think you're getting my point about the animal being mixed in with koi. There's no reason the pet store would...

I got my two from a classified ad on the caudata.org forum.