Author Topic: now why would you eat that? (Read 1692 times)

fishingonly2002 · « **on:** Feb 19, 2006, 07:10 PM »

hey guys, I jigged for an hour or so today, and managed a 17 inch rainbow. I brought it home, and when I was cleaning it. rocks started coming out of its stomach. gravel, about the size of a pinky nail.

do rainbow trout eat rocks to help digestive systems?
accidently eat some?
when there is nothing else?

~Neal

pontiac787 · « **Reply #1 on:** Feb 19, 2006, 07:42 PM »

I could be wrong but I think they suck up gravel when there eating crawfish and such off of the bottom.

Hood · « **Reply #2 on:** Feb 19, 2006, 07:45 PM »

kidney stones....too much dairy for that little guy....he is in a better place

i also think its from suckin stuff off the bottom and getting a couple pieces each time...

taxi1 · « **Reply #3 on:** Feb 19, 2006, 07:52 PM »

I've seen this in fishing tournaments where the fish are destined to be weighed then released. Sad but true.

rumblefish_1 · « **Reply #4 on:** Feb 19, 2006, 08:07 PM »

My take on it is that they ingest them while taking forage off the bottom. Cant be good for them huh?

fishingonly2002 · « **Reply #5 on:** Feb 19, 2006, 08:24 PM »

thanks guys. wow, must suck passing that through huh

billditrite · « **Reply #6 on:** Feb 19, 2006, 09:13 PM »

ive seen it in lakers and brookies too. i beleive they just suck it up with their prey.

Pomoxis · « **Reply #7 on:** Feb 19, 2006, 10:52 PM »

I've seen it, but I forget where. They just suck it up with stuff off the bottom.
I think they can expell it at will too.

OK, OK, I remember where I saw it. Brook Trout with rocks in their guts. I examined the rocks and some of them had half-digested caddis larvae attached. The brook was full of caddis larvae and they were all attached to the well rounded rocks, maybe ~1/2" rocks. When I saw the stuff in the stomach, I realized that they were swallowing the rocks and digesting the larvae right off, then probably expelling the "stripped" rocks.

Makes ya wonder about new lure possibilities. 8)

TJG · « **Reply #8 on:** Feb 20, 2006, 02:24 PM »

U always see that with burbot, it is to help with digestion in the burbot.
Could be part of it too.

adipose · « **Reply #9 on:** Feb 20, 2006, 02:37 PM »

just yesterday i wittnessed this with some goldfish in a large aquarium that was on display in a resteraunt.The goldfish would suck the rocks in and on the next breath,exhale the rocks.Ill bet they are filtering the smaller mynute food particals and spitting out the useless stuff only to accidentally swallow the rocks.i found a trimmed fingernail in my cabbage roll a week ago.spit it though.

Tip-UpTommer · « **Reply #10 on:** Feb 20, 2006, 04:52 PM »

I have seen that in all kinds of fish before. i'm wondering if its kinda like birds eating gravel to help in digestion. i'll have to look that one up.

cold_feet · « **Reply #11 on:** Feb 20, 2006, 05:21 PM »

Balist! lol like an old ship

crappieslayer22 · « **Reply #12 on:** Feb 20, 2006, 07:14 PM »

some axadent pick ups and if the fish are deep they eat them to help keep them on the bottem

Cargo · « **Reply #13 on:** Feb 21, 2006, 05:28 AM »

sounds like it time to get the old rock jig out!

9fingers · « **Reply #14 on:** Feb 21, 2006, 08:24 AM »

Quote from: adipose on Feb 20, 2006, 02:37 PM

just yesterday i wittnessed this with some goldfish in a large aquarium that was on display in a resteraunt.The goldfish would suck the rocks in and on the next breath,exhale the rocks.Ill bet they are filtering the smaller mynute food particals and spitting out the useless stuff only to accidentally swallow the rocks.i found a trimmed fingernail in my cabbage roll a week ago.spit it though.

Hope it was a clean fingernail....

Rockfish · « **Reply #15 on:** Feb 21, 2006, 05:30 PM »

Better than someone's thumb

Fat Boy · « **Reply #16 on:** Feb 21, 2006, 07:15 PM »

Now you know how trout get iron in their diet

Grimace · « **Reply #17 on:** Feb 21, 2006, 07:33 PM »

totally unrelated. but i have seen african ciclids in a fish tank who have the territory divided between them. sometimes the smarter one will pick up rocks quickly swim into the other ones territory and drop them off all day or week until the rocks pile up and the other fish has less swimmable territory.

It was a pretty neat thing to see.

PondPro · « **Reply #18 on:** Feb 21, 2006, 08:53 PM »

i catch allot of bookies with stones in its stomach and there in a little stream.

NickP · « **Reply #19 on:** Feb 21, 2006, 09:06 PM »

I was exspelled froma tourney here inb ct cuz my 4pound smallie was 3 9 without the rock in its stomach- I really didnt puit it there and I couldnt believe they cut it open to find out

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Author Topic: now why would you eat that? (Read 1692 times)