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Paul Minett

macrobrachium Spinipes growth update

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Paul Minett    91
Paul Minett

Had these guys a bit over 2 weeks now and the growth has been amazing they have gone from under 2cm to over 5 which seems amazing until you think about their adult size of 45cm which they can reach in 6 months I'm getting a little worried how do you house 7 of these little monsters lol.Image may contain: plant, nature and outdoor

Image may contain: plant, outdoor and nature

Image may contain: outdoor

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revolutionhope    424
revolutionhope

They have quite beautiful markings. Best of luck finding a home for them 🤤


will

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Madmerv    130
Madmerv

Are you kidding?? Up to 45cm. 

That is amazing and they are already looking really cool. How big a tank do you have them in?

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Paul Minett    91
Paul Minett

no not kidding they are huge when adult. at the moment they are in a rather small division about 40cm square at a guess they will outgrow it in a month maybe 2 if they are playing nice. I'm will need to evict the bottom tank of the rack then and remove the dividers giving maybe a pair the 5ft tank which may be just enough space for them to get along in.

20289709_839374652886950_1124840416_n.jp
adult pic courtesy of Google

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revolutionhope    424
revolutionhope

45cm excluding claws of course ?


will

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Madmerv    130
Madmerv

Ahh i googled them up and the common name is Cherabin. I have caught a few of these in the past but they never seem to make it to a tank. Mine seemed to all go a bright red. Enough said.

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jayc    1,403
jayc
1 hour ago, Madmerv said:

Enough said.

LOL! 

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Paul Minett    91
Paul Minett

good feed lol

 

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    • revolutionhope
      Good solid advice@jayc :-)


      will

    • jayc
      The shrimp seem to not mind it at all, in fact they seem to be thinking ... "Ooo, look! New foraging areas" whenever I disturb the substrate. But of course, I match the new water parameters to the old as much as I can except for TDS (generally the new water is lower in TDS). Every other parameter, like pH, GH, and temperature will be a very close match. So the shrimp don't notice it much. I catch as many as visibly possible into a bucket temporarily while I clean the tank. And they are returned to the tank after acclimating them slowly. I filter the water I drain into a net first to catch any baby shrimplets.  If you want to add substrate without removing the old substrate, it can be done easily ... one scoop at a time. Use those plastic takeaway containers. The shrimp will scatter.  Don't be too worried, they are faster than you think when the need arises. I aim to never loose any 😉 🤘  
    • jayc
      Where is @Foxpuppet and @lodo when you need them?
    • Baccus
      I think to a degree volume of water and stocking levels relevant to that volume assists in shrimp size. A couple of years ago I chucked a heap of cull cherry shrimp into my 1000L pond and months later when doing some maintenance on the tank found freakishly large cherry shrimp. This pond didn't get lots of special foods like the tanks did, instead might have only had commercial fish food put in once a week. However did/ does have a large lily plant, other weeds, leaves and fruit (mostly icecream bean fruit and leaves) falling into the pond and plenty of bloodworms naturally colonised, along with dragonfly nymphs which predate on the shrimp. I have never seen such large cherry shrimp again and certainly have never produced any of that size in any of my tanks even the 4ft tanks. So even though shrimp maybe able to do quite well in nano and small tanks I often wonder if we do them a disservice by having them in small tanks, in effect stunting them to some degree. revolutionhope I had also heard about dark substrate bringing out the best colour, however I once had some of the darkest glossy red cherry shrimp on pure white sand, with live plants natural timber and fish. Other shrimp have been just as well coloured on natural coloured creek gravel. Less well coloured or have taken longer to show good colour potential have been on a gravel blend of natural and fluro coloured gravels like what most kids will buy for their first tank because they like the pretty colours. In my black cherry tank I am actually getting to the point of trying to decide in which direction do I want to go with the black breeding program. Since I am now getting blue black shrimp. Some of the shrimp are still a nice solid glossy black but have a distinct dark blue undertone. I wish I could get a photo to show the variation between these blue blacks and true blacks. In this same tank I am still having to remove the odd chocolate, very occasional faint yellow and green, recently pale blue and thankfully even less often now wild type. Oh and if possible with your divided breeding programs try to keep the separate tanks a good distance apart since shrimp are good climbers and sneaky escape artists. Where I have my tanks ( all open topped) one of the tanks has higher sides than its neighbouring tank which is lower. So even though the there is a gap between the tanks I am almost certain that shrimp from the higher tank have managed to flip over the side and by more good luck than planning end up in the lower tank. Some have not been so lucky and then I find crispy dried shrimp on the bench. So if tanks where the same height and butted up side  by side or even one tank divided there is the potential for shrimp to make escape bids and climb into neighbouring tanks. I have even seen photos of shrimp climbing against the flow of a HOB filter return to get into the yummy gunk inside the filter.
    • EBC
      How do your shrimp fare when you do a big tear down like that? Do you generally expect to lose a couple? Or do you put them in another tank while you do it? I am currently renting one bedroom apartments so I only have the one small tank. With such a small tank I would be worried I would crush some shrimp in the process. 
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