Invader Xan
Fish Crazy
Simple question -- will a red clawed crab eat a triops for lunch? Or will they get along ok?
FYI, I'm talking about Triops Australiensis/Longicaudatus.
FYI, I'm talking about Triops Australiensis/Longicaudatus.
Triops And Red Clawed Crabs
- Thread starter Invader Xan
- Start date
dizzied
Fish Addict
It probably wouldn't, though they shouldn't be kept together because they have different needs in terms of water parameters.
OP
OP
Invader Xan
Fish Crazy
*nods*
That's what I thought. Never hurts to ask someone though...
That's what I thought. Never hurts to ask someone though...
three-fingers
Fish Connoisseur
Triops australiensis can* live in brackish water with rcc's so water parameter wise it would be OK, but the are the rcc's may eat them eventually. I've never kept red claw crabs, but if they will go for small fish(no idea if they do) then they will go for triops.
*In Australia there are triops that live in salt lakes after heavy rains make the water brackish. They will live till the water is half the salinity of sea water.
Though there is not nearly enough research done on triops in Australia to tell weather these salt lake triops are actually Triops australiensis, there is only one accepted triops species in Australia so thats what the salt lake species has been named.
There is actually some debate about the commercially available Triops australiensis, since the few genetic studies done on them suggest that they are probably just an Australian sub-species of Triops longicaudatus (which is currently believed to live only in North America, Central America, South America, Japan, the West Indies, the Galapagos Islands and New Caledonia).
*In Australia there are triops that live in salt lakes after heavy rains make the water brackish. They will live till the water is half the salinity of sea water.
Though there is not nearly enough research done on triops in Australia to tell weather these salt lake triops are actually Triops australiensis, there is only one accepted triops species in Australia so thats what the salt lake species has been named.
There is actually some debate about the commercially available Triops australiensis, since the few genetic studies done on them suggest that they are probably just an Australian sub-species of Triops longicaudatus (which is currently believed to live only in North America, Central America, South America, Japan, the West Indies, the Galapagos Islands and New Caledonia).
OP
OP
Invader Xan
Fish Crazy
Wow... thanks for the info!
It seems reasonable that a triops could survive a small amount of salinity. My last triops happily survived the ammonia spike, nitrite spike and some accidental pesticide contamination (actually, they seem ideal to add to a tank while it cycles!).
As for the crabs, I was told at my LFS that if I'm thinking about buying a crab, they're probably the best choice. Apparently they're quite slow to nip and can live happily alongside some kinds of shrimp. As for fish, I was told that they're only in danger from crabs when they're asleep -- and triops don't sleep.
*shrug*
Though if I'm wrong on any count please do let me know.
It seems reasonable that a triops could survive a small amount of salinity. My last triops happily survived the ammonia spike, nitrite spike and some accidental pesticide contamination (actually, they seem ideal to add to a tank while it cycles!).
As for the crabs, I was told at my LFS that if I'm thinking about buying a crab, they're probably the best choice. Apparently they're quite slow to nip and can live happily alongside some kinds of shrimp. As for fish, I was told that they're only in danger from crabs when they're asleep -- and triops don't sleep.
*shrug*
Though if I'm wrong on any count please do let me know.
crab are as different as any other fish, but it seems the Redcrab is not the fish killer some might think. mine shows no interest in even a dead fish, never mind live ones. from my experience they are mostly veggie anyway. not sure it the Tripods would see it the same way though. lol in the end it must be worth a try! this is how fishkeeping moves on, by people trying things. let us know what you decide.
J4MES
Fishaholic
sorry to hijack this thread and all, but can i keep triops with fish?
J4MES
J4MES
dizzied
Fish Addict
There's actually a lot of different triops species, though only three or so are easily available. I doubt those would be brackish though, even the same species of animal can be very different from each other.
If triops can be hatched in freshwater with higher PH, that might be a solution.
If triops can be hatched in freshwater with higher PH, that might be a solution.
OP
OP
Invader Xan
Fish Crazy
They need to be hatched in ludicrously clean water. Deionized gives the most hatchlings. Higher pH would probably not be as successful.
Keeping them with fish? I've never tried, to be honest. Though I can tell you they don't tend to attack anything bigger than they are (unless it sits very still - make sure your fish are healthy). If you add them when they're too small, they might be eaten though. If you want to try (why not, eh?) make sure you don't have any fish that are too small (anything less than a couple of inches in length like tetras might be in danger), and let the triops grow to at least an inch or two in size (should only take a couple of weeks from hatching). Triops prefer to stay at the bottom of the tank and like sinking foods and bloodworms (though I've found they love to chase live daphnia). Essentially, their requirements are a lot like shrimp...
Oh, one other point. Be careful if any of your plants have exposed roots and don't be surprised if you notice their leaves being nibbled. Triops are actually considered a crop pest in some countries because they'll chew on pretty much any plant they find.
Hope that's some help.
Deionized gives the most hatchlings. Higher pH would probably not be as successful.Keeping them with fish? I've never tried, to be honest. Though I can tell you they don't tend to attack anything bigger than they are (unless it sits very still - make sure your fish are healthy). If you add them when they're too small, they might be eaten though. If you want to try (why not, eh?) make sure you don't have any fish that are too small (anything less than a couple of inches in length like tetras might be in danger), and let the triops grow to at least an inch or two in size (should only take a couple of weeks from hatching). Triops prefer to stay at the bottom of the tank and like sinking foods and bloodworms (though I've found they love to chase live daphnia). Essentially, their requirements are a lot like shrimp...
Oh, one other point. Be careful if any of your plants have exposed roots and don't be surprised if you notice their leaves being nibbled. Triops are actually considered a crop pest in some countries because they'll chew on pretty much any plant they find.
Hope that's some help.
three-fingers
Fish Connoisseur
That's very true, but the solution is just to use more cystsThey need to be hatched in ludicrously clean water.
. Triops lay both eggs and cysts*, eggs hatch instantly without being dried out (not really noticeable in aquariums because they are immediately eaten) and cysts hatch after being in the water for a certain preprogrammed period of time, though some cysts require to be dried out (of these some need to be rehydrated and dried out multiple times).
With the eggs, the mineral content and parameters of the water don't matter (though in extremes they will just die after hatching).
With cysts, some will hatch out fast and some will hatch out slow, it depends on the water, the structure of each individual cyst (some will take longer to rehydrate), temperature, light and also on how long the individual cyst ha been pre-programmed to hatch after rehydration.
I have successfully hatched and raised both T.longicaudatus and (the supposed)T.australiensis in pH ~8 water, I have not tried T.cancriformis at this pH yet.
In the future I hope to test hatching different species of triops at different salinities, and also hatching in freshwater and transferring to brackish
Not exactly true when it comes to triops, since in a lot of triops species there are hermaphrodites, in some triops species there are males and there are hermaphrodites instead of females (T.longicaudatus is an example) and with some species there are apparently no males and only hermaphrodites.
These hermaphrodites do not require a male to produce fertile eggs.
The trouble is there are so many different species of triops but loads of them are just lumped together in the same species.
There are also lots of subspecies that are not recognized either.
Another species that can tolerate brackish water is T.cancriformis, In the UK some of the pools that it used to live in were actually lost to the sea in the 19th century...
However the actual salinity they were found in was apparently not recorded, and those T.cancriformis may just have been another sub-species, since it is not even recorded anywhere if these brackish water triops were any different at all from the British triops living in freshwater .
Also, there are three currently accepted sub-species of T.cancriformis - T.cancriformis cancriformis, T.cancriformis mauretanicus and T.cancriformis simplex, and of these it is not listed anywhere available to the public which species we have here in Britain. It would appear from the limited photos of British triops though that we have T.cancriformis cancriformis - which is the same ones you can buy on-line.
*There's a grey area between the terms 'eggs' and 'cysts', the eggs could just be cysts that are pre-programmed to hatch extremely fast.
three-fingers
Fish Connoisseur
Hey .
Thats because :
And btw both the plural and sigular of 'triops' is 'triops'. 'Triop' is not a word.
.Thats because :
.
And btw both the plural and sigular of 'triops' is 'triops'. 'Triop' is not a word
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