Jumping fish.

[wey2go]

I am currently raising some rainbow trout in my salt-water swimming pool.

Seem to be growing well for the past 4 months. Am still in trialling the idea with only 12 trouts in a 30,000 litres pool.

Bought them for $1.60 each from Buxton Trout Farm (4- 5 inch fingerlings).

Found one dead this morning in the flower bed next to the pool. It was 11 inches.

Is it normal for trout to jump out from a pool?

I am not sure whether it is con-incidental as I cut down their feed to about 1/4 of their usual over the past 3 days. I was definitely over feeding them previously .... but since they were eating everything, I thought I just kept feeding them. I was feeding them about 3 big handfuls of feed pre days (for 12 trouts). Cut down to about 1 normal handful of feed the past 3 days.

[fishfood]

I am currently raising some rainbow trout in my salt-water swimming pool.

Seem to be growing well for the past 4 months. Am still in trialling the idea with only 12 trouts in a 30,000 litres pool.

Bought them for $1.60 each from Buxton Trout Farm (4- 5 inch fingerlings).

Found one dead this morning in the flower bed next to the pool. It was 11 inches.

Is it normal for trout to jump out from a pool?

I am not sure whether it is con-incidental as I cut down their feed to about 1/4 of their usual over the past 3 days. I was definitely over feeding them previously .... but since they were eating everything, I thought I just kept feeding them. I was feeding them about 3 big handfuls of feed pre days (for 12 trouts). Cut down to about 1 normal handful of feed the past 3 days.Hi there i have had a couple of jumpers also

[GaryD]

Hi wey2go,

Fish jumping out of tanks is a common enough occurrence. I've had a couple of Jade Perch do it and they're fairly quiet.

I'd suggest that it probably has more to do with the amount of freeboard in your swimming pool than anything to do with how much you're feeding them.

Gary

[doug.a]

There is an old saying among salmonid breeders it is if they are jumping they are looking for rain perhaps the dissolved O2 is low are you running an airator?
:confused:
Doug.a

[wey2go]

I have a 6,000 LPH fountain pump running (shooting jet of water into air as still waiting for proper fountain head).

Also a 16,000 LPH pump running all the time.

But have to say that I am experiencing algae bloom at the moment (even before the trouts were introduced into the pool).

[GaryD]

Hi wey2go,

Your algae problem is likely the consequence of over-feeding.

Most small aquaculture system experience an algae problem sooner or later. You'll find that it will happen less as your system matures.

Just be conscious of the effect of the algal bloom on your pH and other water quality parameters.

Gary

[wey2go]

Algae was already a problem way before any live creatures were introduced into the pool. It was a salt-water swimming pool that were not maintained due to falling water level below the swimming pool pump intake level (skimmer box).

[cando]

I have my Jades in a bathtub full of holes inside a 2.4m x 5m x 500mm deep pond. I now have a plastic greenhouse frame over the pond with a small door at the end where the bathtub with 24 Jades are.

Last night I shone a torch through the door into the bathtub. They did not like that and you could hear them conking their heads against the side of the bath. One jumped out and ended up in the big pond. First jump ever for me.

I grow water lilies in the big pond and suspect the Jadie will would love to eat that. Does anybody know if they like to eat water lilies? They do love their greens.

How do I get the bugger back into the bathtub? Brian Hobbs catches his fish from his tank with a hook (barb removed). Don't think that will work here as the pond is too big. A net is out of the question for the same reason and the water lilies are in the way. The holes at the end of my fish trap is too small for these 150mm long fish.

Francois

[fishfood]

Shineing a torch any near fish at night really stresses them out [watch the Greene's don't hear about it you will be had up for cruelty to animals]:confused:

[fishfood]

should have been shining i think:o

[Outbackozzie]

I think you'll find the Trout jumped while it was chasing a fly or insect. They revert to natural feeding when they get hungry.

[Dufflight]

Cod and silvers think there in a hole when placed in a tank and will also jump where ever there is water splashing back into the tank or a lot of bubbles close to the side. Aquafarms keep there air stones away from the side or can end up with empty tanks.

[Outbackozzie]

Cod in a moderately stocked situation will also chase smaller cod over the side of the tank, this is stopped by very high stocking densities.

[DaveOponic]

Barramunid love to leap and splash at feeding time. They have taught the Tilapia to do the same.

By contrast in the other tank the Tilapia and Koi swim together and are very shy at feeding time and never splash around.

This leads me to believe that fish learn from other fish, even different species and change their behaviour according to their peers habits.

[DaveOponic]

Barramunid

Er that should have been "Barramundi"

[wey2go]

I have the same observation with Dave.
One pond, Silvers with goldfish. Silvers are happy to feed on the surface on floating pellets as goldfish generally feeds on floating pellets. Another pond, silvers alone. Will not feed on floating pellets.