Back to the topic at hand - these rainbows are spawning in this small spring creek. Is this bad?
This is a tough question Tony...I think what John is saying above is that it's not a good idea if you are trying to protect wild natives in that stream. The bottom line is only the brooks have real native species status in our neck-of-the-woods. What is going on there should determine the answer I think.
In a real healthy productive stream I think a little competition, if the above has been answered, is not a bad thing. Wild means wild in every aspect, no? Even when they become harder for the novice to catch.
We have Rainbows in the Mainstream (Holy Water) of the Au Sable and there may be a few in the other branches but I've never caught them there. They don't stock the upper reaches of the Au Sable and there is natural reproduction of the Rainbows. There is a dam in Mio that keeps the upper sections protected from other competition like from Steelhead & Salmon runs.
There is a pond behind the dam and there are some large Bows there that migrate upstream for spawning...These guys are probably responsible for the continued re-population.
They all seem to get along and spawn at different times with the Bows doing their thing at the end of winter/early spring. I think, for the most part, they inhabit different parts of the stream during the rest of the year. Though this isn't always true, the Browns hug structure and deeper holes, Brooks fill in the empty spaces, and the Bows like the cooler, riffled, aerated parts of the stream...I did pull a wonderful Brookie from a log Sunday and have caught Browns in the "Brookie Hole", but you know what I'm saying.
I doubt we will ever go back in the midwest etc and only put natives in the streams, but it would be nice, if the stream can support it, to let them go wild and invest in stream improvement to help sustain that "wilder" population...I think right species for the right habitat...
We have had some issues here over the years with some old put-and-take programs that only still exist due to the history of the programs going way back. The DNR would kill them if they could. We have had groups try to place trout in marginal waters and I think they are wasting their time.
I won't name names, but one of my favorites is a feeder stream that before it was damned in the 30's had a monster pike spawning run. They have removed the dam and have placed trout way upstream...I think that once the pike feel that cool water flowing in to a warm water environment they will be coasting upstream again and once they discover there are dumb hatchery trout swiming around up there they will stay...:) They will think that their prayers have been answered!
Back in the early 90's this same group asked me and a couple of their members to research the possibility of placing trout in other parts of the river as a put-and-take situation. I owned up to a predisposition against it but they kept me on anyway. We gathered together with the watershed folks, the MI DNR, and the fisheries boys from U of M...They gave me all I needed to shut it down.
For some reason they are revisiting this I think because of an obsession with trout and maybe other vested local interests...Struggling fly shops have dreams of riches floating around in their heads and being flooded with guys needing flies and gear and directions to the promised land...
I think we need to stop with the funny business sometimes and get some real science to answer our questions. Sometimes the DNR just wants us anglers to be happy and they think that means to us catching alot of fish no matter how stupid they are or how lacking the habitat is.
This time I'm really sorry for the ramble boys...Really!
Spence