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Catching Gammarus

 
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nrp



Joined: 20 Nov 2005
Posts: 10
Location: Anstruther, Fife

PostPosted: Fri Dec 02, 2005 3:42 pm    Post subject: Catching Gammarus Reply with quote

I want to catch Gammarus locusta as live food for my aquarium, but the little darlings leap about so it's hard to get them into

a jar.

The least ineffective method so far is to find a stone they cling to underneath, and dip it in a bucket of sea water. They then let go the stone and

presently you have a fair number in the bucket. The problems are (a) finding the stone - I still can't tell which stones are good and which bad - and (b) only about 5%

hang on to the stone. The rest zoom or jump about in the sand or water underneath and are impossible to catch.

Any suggestions?
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bethany
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Joined: 28 Feb 2005
Posts: 19
Location: Nearwater

PostPosted: Fri Dec 02, 2005 8:58 pm    Post subject: Reply with quote

If you have access to sandy areas, then the Common or Sand Shrimp, buries itself in the sand and can assume a similar colour to the particular

substrate, making it difficult to find.
It can be collected by pushing a fine mesh shrimp net along the surface of the sand in shallow water.

The amphipods that

are found under rocks in the mud/damp areas when tide is out, can be collected with a small tank fish net (4x4inch sort of size - the net, not the mesh! Wink )


Keeping them alive during transit back to tank proves a little tricky. Whatever the container, make it so its absent of daylight or with masses of dark

shelter.

Sand-hoppers are common. down its back, is a familiar sight on the upper shore among seaweed litter on the strand line. I've never tried this, but

apparently if you dig a ho;e and place a jam jar in it with a torch shining on it, you can leave it and the sand hoppers will collect and fall in!?

A few ideas. Is tricky

keeping food source. We often collect mussels and feed with one every now and again by jush breaking the shell. The inhabitants sort the rest out.
Clean up the

debris though or the rot will swap the tank water.

Hope helps
Bethany Cool
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