Do you agree that CRS likes to swim towards the flow of the water?

acesk · 7th Oct 2006, 10:39 AM

Just to share some thoughts. I have been observing my CRS for the past 1 month and realise they like to do quite alota stunt. The first time happens when my outer tank cover filter overflows. The water dripped out of the box and flow as water droplets which falls on the net wall i created. To my suprise, i have seen many couples of CRS trying to climb out of the water through the net and reach out to the open. They breath in through the droplets. There is cases where 2 of them manages to cross to the other side of the wall.

Second case happens recently where i have to change my tank. I kept them seperately in a small medium tank with my outer tank cover place on top of the tank. The water flow of the tank is rather strong and i place a drift wood with US felli to so call block or decrease the strong current. To my suprise, they are now mostly gathered at the top of the wood where the strongest current is occuring.

No deaths so far. Water temp and quality control at top most. I belive it is their natural behaviour to swim along the currents like some fresh water fishes where they swim up the water fall. Any comments?

Thanks. Acesk.

BaLuKu · 8th Oct 2006, 02:33 AM

Interesting findings and pics you have there

alfredo · 8th Oct 2006, 10:31 PM

Hi Acesk,

Do you have your external filter outlet submerged?

I'm not an expert, but, think your CRS goes towards the surface only because they don't like the water( think O2 not enough)

I use to have the same problem & discovered that its because my filter outlet is submerged( I kept it that way as I had a planted tank & was told that I could hold more CO2 in my tank by doing this...)

Anyway, I re-positioned my filter outlet to the surface & for about 1 or 2 days later, all my CRS is no long gathered at the surface...

Hope this info is of help to you...

acesk · 9th Oct 2006, 12:10 AM

Not submerged. With O2 pumping. Well, they don't gather when i am not feeding them. They gathered after they have been feed. And they don't gather after the lights are off. I will keep observing the outcome as case 1 suggest that they climb over the mesh wall. Case 2 may apply to your situation.

Thanks.
I will keep observing!

**Moses703** · 9th Oct 2006, 01:43 AM

My CRS doesn't do any stunts, but they are

busy shrimps walking and climbing all over the tanks.

Maybe they have different personality.

**luenny** · 9th Oct 2006, 02:28 PM

Mine neither. The only stunt I see my CRS do is running away with a big piece of food.

**newb4ev3r** · 9th Oct 2006, 04:44 PM

Well.... my old RCS is very quiet, while the others bought from different LFS is very active. My CRS is also pretty movement-less.

**weesy74** · 16th Jan 2007, 05:47 PM

I have the same experience. Some CRS of mine like to go against the current generated by canister filter. I direct the out flow to one corner of my tank and some of them like to climb up that corner to the outlet.

**roisu** · 17th Jan 2007, 12:35 AM

I think there is 2 reasons, one is the water is not good, everytime i put some shrimps to test new tank's water, they always try to climb out in the 1st week
second reason, do you find out when one shrimp start eating a dry food, the others must know from far away and swim to eat the food? I GUESS it is becoz the water drop makes the vibration, and the shrimps think there is something to eat. ???