Jump to content
waffle

micro crabs / amarinus lacustris

Recommended Posts

waffle

I was looking at Thai micro crabs and they seem so adorable. But sadly AFAIK not available in Australia.

Seems we have a native crab that's similarly adorable, amarinus lacustris:
http://www.aabio.com.au/research-continues-on-the-false-spider-crab-amarinus-lacustris/

Anyone happen to have had any luck finding them or buying these? Or the Thai micro crabs?

  • Like 1

Share this post


Link to post
Share on other sites
NoGi

So cute, @wayne6442 used to have some from possibly @northboy but both have been away from SKF for a little while.

Share this post


Link to post
Share on other sites
Disciple

They do look pretty cool

Share this post


Link to post
Share on other sites
waffle

Ooooh so there's hope! I sooooo want to put about half a dozen of them in my glass shrimp tank. 

I'm gonna attempt a weekend trip to Straddie to look for some if no-one has any already. Provided there are some good non-protected areas to go searching that is.

Share this post


Link to post
Share on other sites
Grubs

I've seen them in an irrigation ditch in western Victoria many years ago. I'd love to find them again.

Share this post


Link to post
Share on other sites
buck
On 29 February 2016 at 6:26 PM, waffle said:

Ooooh so there's hope! I sooooo want to put about half a dozen of them in my glass shrimp tank. 

I'm gonna attempt a weekend trip to Straddie to look for some if no-one has any already. Provided there are some good non-protected areas to go searching that is.

Keep us posted on how you go finding them! They look really cool! 

Share this post


Link to post
Share on other sites
Baccus

Since I manage to find quite a few interesting critters when I go hunting for wild local aquatics I might actually manage to find some of these guys, assuming they are in my area. I know there are plenty of the much larger fresh water crabs about.

I wonder if night hunting for them might make them easier to find? I find many shrimp, crabs and fish are less timid at night and with a bright torch the shrimp eyes often give themselves away by reflecting light and the light stuns them long enough for you to scoop with a net.

Share this post


Link to post
Share on other sites
waffle

Cool let me know what you find! I'm kinda keen for any unusual looking peaceful native inverts for my native tank. 

I've decided riffles don't count as peaceful because they don't understand it's not cool to eat tiny shrimplets so they now have their own tank -_-

  • Like 1

Share this post


Link to post
Share on other sites
Baccus

Unfortunately it appears that the native micro crabs are only found down south, but there is bound to be a similar species found in our northern waters.

Two of my favourite natives that are harmless in my tanks would have to be Notopala snails and these whopping great black shelled snails.

P1110270_zpscqf7h4vt.jpg

P1090876_zpsum8hyeng.jpg

P1090897_zpsyatdpjtr.jpg

  • Like 4

Share this post


Link to post
Share on other sites
waffle

Update!

A fellow on facebook (if you're also on SKF and seeing this, that'd be cool!) is breeding and selling an almost identical species of crab, Amarinus Laevis. THey grow to approx 22mm, so they're just a tad bigger than amarinus lacustris. He's breeding them in fresh water successfully and selling them really cheap. If anyone was keen to get some I can put you in touch ? I have set of 8 females and 2 males arriving this week so pics coming soon. Apparently they're completely shrimp safe and survive/breed in water conditions suited to both neos/tigers and crystals/TBs. They do, however, snack on tiny snails but ignore adult ones. The guy keeping them says this allows him to have adult ramshorns in the tank to do clean-up duty without them breeding like mad and taking over the place.

So, let's see how this goes!!

Museum Victoria has some great photos!

http://collections.museumvictoria.com.au/species/14241

825319-small.jpg825318-small.jpg

  • Like 5

Share this post


Link to post
Share on other sites
fishmosy

Any info on what water parameters they require? 

Share this post


Link to post
Share on other sites
waffle

This is what the breeder says re water!


"Water Parameters - 6 - 8pH,  10 - 30deg C
...They are very hardy and love coldwater or tropical tanks. They are an estuarine species but these ones have been bred in and live in freshwater. ...They are fully aquatic and don't need an area to leave the water. They are very hardy and will breed readily in a wide range of parameters."

Share this post


Link to post
Share on other sites
NoGi

I'm going to get a couple to take some macro photo's off. I'll keep with my bloody mary/tang tigers and see how they go together

  • Like 1

Share this post


Link to post
Share on other sites
waffle

Cool, looking forward to comparing notes!

Share this post


Link to post
Share on other sites
newbreed

I had a reputable breeder here in Victoria ask me about a month ago if I would be interesting in getting crabs?! I was initially confused. Lol

Looks like there may be a source of collection soon for them @waffle. I will advise what I find out. 

They do look like interesting characters (images from Google)

image.jpg

image.jpg

Edited by newbreed
  • Like 1

Share this post


Link to post
Share on other sites
Vadnappa

I've been keeping these crabs, from the breeder in Vic, in this water 

Gh = 4 dGH
KH = 7 dKH
pH = 7.5
Tds  = 320

And they have cleaned out a moderately infested tank of mini ramshorns and pond snails, haven't seen a snail in that tank for weeks. Found they really appreciate some driftwood with deep cracks they can really wedge into during the day. They also get a little rowdy when they don't all have something to eat but it's minor squabbles no injury has resulted. 

They are in with red nose and chameleons, and a few plants. They don't seem to do anything to the plants that I can tell, the red nose have been munching on them already. And there are baby chameleons running around without any apparent drop in numbers.

  • Like 4

Share this post


Link to post
Share on other sites
KeenShrimp

Great looking little guys. @Gbang, could you start breeding these guys stat into bright colouring? ? now there is a challenge! 

I am just concerned about shrimplets: if these crabs eat baby snails, surely they would go for newly hatched shrimplets? At 2cm total size ( on Gumtree) the pincers are large enough for this. 

Who can chip in with some experience with crabs?

Are the native chameleon shrimp just as fragile as for example TB shrimplets?

 

  • Like 1

Share this post


Link to post
Share on other sites
sacurt

I believe Exotic Aquatic in Carnegie, VIC had some small crabs for sale a month ago, they've got a video up on their Facebook page. Not sure if they are the same as above though?

  • Like 1

Share this post


Link to post
Share on other sites
waffle
3 hours ago, KeenShrimp said:

I am just concerned about shrimplets: if these crabs eat baby snails, surely they would go for newly hatched shrimplets? At 2cm total size ( on Gumtree) the pincers are large enough for this. 

Yeah I was wondering the same - for example if there was as moulting shrimplet that is temporarily immobile or a weaker shrimplet.  There's only one way to find out.... I'm going to be keeping a careful eye on them and report back about this.

  • Like 2

Share this post


Link to post
Share on other sites
waffle

I asked the breeder and he says they're not fast/agile enough to capture a shrimplet even if they wanted to eat one. Yay!

  • Like 1

Share this post


Link to post
Share on other sites
IHaveCrabs

I'm the guy who sells the Amarinus Laevis. I supply Exotic Aquatic in Carnegie and a few other places around melbourne. I'm a shrimpkeeper myself and these guys absolutely do not eat shrimplets. if they wanted to and they wanted to, and if they where somehow fast enough, they have no way to grab it.  

image.jpg

Edited by NoGi
No selling outside of sales forum
  • Like 6

Share this post


Link to post
Share on other sites
waffle
58 minutes ago, IHaveCrabs said:

I'm the guy who sells the Amarinus Laevis. I supply Exotic Aquatic in Carnegie and a few other places around melbourne. I'm a shrimpkeeper myself and these guys absolutely do not eat shrimplets. if they wanted to and they wanted to, and if they where somehow fast enough, they have no way to grab it. 

image.jpg

Welcome to the forum!! Love that pic haha

  • Like 1

Share this post


Link to post
Share on other sites
Cryptocorynus
59 minutes ago, IHaveCrabs said:

I'm the guy who sells the Amarinus Laevis. I supply Exotic Aquatic in Carnegie and a few other places around melbourne. I'm a shrimpkeeper myself and these guys absolutely do not eat shrimplets. if they wanted to and they wanted to, and if they where somehow fast enough, they have no way to grab it. 

image.jpg

I've bought crabs from this guy before (if that is you, Harrison!) and he is reputable beyond belief. Highly recommended. He's generous, genuine and super friendly. Someone I wish all people I bought from were like. I cannot recommend this man enough!

  • Like 3

Share this post


Link to post
Share on other sites
NoGi

@IHaveCrabs, you should become a subscription member and sell them here too. I think it's going to be popular if shrimp safe. ??

 

  • Like 3

Share this post


Link to post
Share on other sites
waffle
1 minute ago, Cryptocorynus said:

I've bought crabs from this guy before (if that is you, Harrison!) and he is reputable beyond belief. Highly recommended. He's generous, genuine and super friendly. Someone I wish all people I bought from were like. I cannot recommend this man enough!

Nawwww such beautiful bromance!! Yes it is Harrison! Defs second that recommendation.

  • Like 3

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Must Read SKF Articles

  • Register today, ask questions and share your shrimp and fish tank experiences with us!

    Join Our Community!

  • Posts

    • sdlTBfanUK
      Glad we can be of some help and I agree you are doing the best thing by thinking it out thoroughly before you get started. It is very frustrating when you spend a lot of money on a small setup to then have to go and do the same again for another setup because it isn't big enough, way more economical and cost effective to get it right first time, though as you say you are starting with some of the stuff! I'm also sure that when I closed down the small one and moved the shrimps to the new tank that I probably lost half of the shrimplets as they were too small/young to be moved in reality but I really didn't want to have to run 2 tanks for a few months whilst I waited for them to grow - I had way too many anyway. I can't be much help regarding the 'chiller' as we don't have hot enough weather here, in fact even the humans don't get that over here (except in expensive cars)? A lot may depend where you are placing the setup as well, mine is in a dark corner that doesn't get any direct sun. If it isn't likely to get too hot there for a while you can of course come back to that as a separate issue as it won't mean disrupting anything in the tank anyway should you decide to get one later!  You are probably best steering away from the CO2 as it is one less thing to set up and, as you, I have read a lot of reports saying it isn't good with caridina shrimp setups, though I have no actual experience with it, but why risk it. Hope you will keep us informed/updated. Simon
    • joemjd9
      I agree with you both and you have changed my mind. I will go for mix of cardinia shrimp. Definately will be lot more interesting in terms of colours and patterns.   I do already have most of the stuff. The only thing that I do not is the Chiller and even though I do have the KegKing Co2 setup, I will stay away from it because its a cardinia setup. Will research a bit further into the chiller this, as I do not want to buy one for a small tank and realise that I need to invest on a bigger one down the line. Thank you guys for the input. Really appreciate the insight. P.S: Great pics Simon. That has certainly swayed me towards a mixed setup.
    • kms
      I started out with a 30cm tank, and it's my only shrimp tank, started of about November with Neo's and added a few Taiwan bee's, king kong, wine reds, pinto's and blue Bolts around feburary, my Neo's have multiplied, but given many away, and finally giving most away, leaving only cardinia, my water seems ok, since many of my cardinia are still here, and my Taiwan bee have berries, shrimplets should come any time. I think you should be prepared to spend money, for me I have a HOF, CO2, water cooler and the right light, i'm intend to change the current substrate from ADA to the PB, but have to wait for the Taiwan bee to have shrimplets.
    • sdlTBfanUK
      Having multiple tanks and a tank rack may be where you want to go eventually but that is probably for the future? If you want to test out the cardina you may want to go the route I did in that having a mix of shrimps colour and pattern in one tank is certainly more interesting to look at than 10 tanks with single/pattern, and I keep getting new ones that I didn't have before, even the boss should like them!!!!! It is obviously a lot cheaper and takes up a lot less time and space as well. I got the 35L dennerle scapers tank (used 3L of substrate) and it is 40cm x 32cm x 28cm and it has 28L of water (my measuring jug is a cheap one so maybe inaccurate, but the tank isn't filled to the brim and stuff in the tank takes up some space). It would give you an extra 10cm x 32cm (plus 2cm x 30cm) which to shrimps is quite a lot, not that I am saying you should necessarily get this tank but just as an example of how less height (which isn't needed for shrimps) in a tank can make a lot of difference to the floor area of a 'similar' capacity tank, but you may think it is too much money for such a small increase, but obviously there is a whole range of other tank choices out there.I assume you would use the heater/light/filter etc from the old tank if you weren't going too much larger? And, of coarse, you can just stick with the tank you have and that should still work out fine for a starter/tester tank? If you want to see the mix then just click on gallery/New images and scroll down. You should show the boss and I a sure it will swing it in your favour! I don't think you should have any problems with caridina if you are sticking with remineralised RO water and proper shrimp products from the very start. It took me years to get to where I am now but I think ALL the problems I had were because I was trying to use 'tapwater', as soon as I started with RO remineralised no problems whatsoever. Any other specifics/question feel free to ask away. Simon
    • joemjd9
      Thank you very much Simon. I have certainly thought about the idea of secondary tanks. But i wanted to test out the Cardinia waters first. If they do capture my interest, I plan to seek my boss (aka wife) to approve the shrimp tank rack idea *fingers crossed* I have been going through this forum and the Shrimpspot forum to gain as much knowledge as I can to get a good start. Thank you again for your message. Every little bit helps.
×