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

    • richiep
      I have a 220ltr tank been running 3 years a while ago they stopped breeding that's CRS &black bee in the same tank so I separated black bee and within two months the bl/bee are breeding yet the big tank still nothing water is ph6.5 gh5 kh1 temperature 23c those readings are the same in the 10ltr black bee, I do 15% water changes in all my shrimp tanks, I'm wondering should I do a big water change in the 220ltsi can't for the life of me think of what else to do, they have not bread for 6 months
    • Kingo
      Morning all, So i thought I might update this thread for any others experiencing necrosis issues. Thanks once again for your advice @jayc!    After 3 treatments of oregano oil, (at @jayc‘s recommended dosage with 3 different foods, 2 x commercial pellets, one of fresh blanched peas) AND increasing my 20% weekly PWC change to 50% twice weekly - my deaths in this tank have stopped. There are still a few w/advanced stages of cell degeneration showing. It appears to have stopped in its tracks for now.  First berries in 6-8 weeks have just been spied also. Perhaps too early to say if the issue has stoped completely. 
    • Kingo
      Hi all,  I am a constant lurker of old threads here it seems. Has anyone had success with crossing BM’s w/black with the goal of stabilising a darker line? 
    • richiep
      your idea of a small tank is worth a shot theres also black bee in the same tank that are not breeding they are the left overs from the transfer to a small tank
    • sdlTBfanUK
      Oh, wow! That really is a surprise then! Maybe your best bet will be to set up a breeder tank which you can then transfer them later into the bigger tank, I guess that will help with getting the best colours possible as well, selective breeding etc? Clutching a bit at straws here, but, It may be worth doing a significant water change if that is an old tank and usually only has a small change. Fresh water usually seems to excite my shrimps and I have noticed this often happens, I guess it is the equivalent of rain falling in the wild and seems to encourage moulting and frantic swimming! I would wait and see if anyone else  has any useful advice on here first though as it is quite likely someone has had your same experience and will know what to do but they may be in a different time zone etc so give it a day or so.  That plan to set up a small tank though is a good one and worth a bash, especially if you already have an old one lying about anyway. I do have some links on my computer so will read those and see if that throws anything up and let you know if I come across anything, probably be tomorrow now though! Simon
×