Jump to content

waffle's Amarinus Laevis


waffle
 Share

Recommended Posts

I've been avidly watching these little guys since receiving them yesterday, and I thought I'd make a new thread for the observations! Fist up some pics!large.DSC_0175.jpglarge.DSC_0170.jpglarge.DSC_0162.jpglarge.DSC_0158.jpglarge.DSC_0155.jpglarge.DSC_0152.jpglarge.DSC_0145.jpglarge.DSC_0135.jpg

Next, some interactions with shrimp. First up, a pair getting intimate (or failing to - looks like the male was just seeing if she was in the mood) while ignoring some nearby shrimp.

 

Next, a male getting territorial and chasing off a sunkist neo. Sorry about the lower quality - camera was set to low res accidentally. This movement is different from how they attack snails, so I think it's a territory issue rather than a hunting attempt. If you slow down the film you can see he raises his body and claws really high as though to look intimidating. But I'm not a crab expert so I dunno.

 

Next a shaky-cam quick-and-dirty video evidencing snail-eating prowess. Don't watch if you get motion sick!!

 

Next up, a rookie attempt at a close-up film. A bit shaky and focus is off, but you can see the female's cute face.

 

Edited by waffle
  • Like 6
  • Thanks 1
Link to comment
Share on other sites

This video shows their normal behaviour around shrimp. Just completely ignoring them. A male walks past a group of shrimp having dinner.

 

The DAS in the video are adults. The Tangs just reached maturity a couple weeks ago so will probs get a bit bigger.

About half a dozen times I've seen them walk right through groups of shrimp without trying to eat them. This is including a group of shrimplets. That vid of the territorial lunge was the only sign of aggression I've seen.

In terms of food, so far I've seen them:

--> Eating a ton of snails.

--> Sifting through the substrate for morsels, with shrimp following and picking up the leftovers.

--> Chewing mulberry leaves.

--> Picking algae off moss. 

--> Eating Australian Blackworm Pellets - this is their favourite by far.

  • Like 2
Link to comment
Share on other sites

Last vid of the night. The females like to launch and try to swim, and this one makes a fairly pathetic attempt and lands in some shrimp. 

 

  • Like 1
Link to comment
Share on other sites

Neo adults and shrimplets have got used to the crabs now. I saw them crawling on a bigger female as she walked around the tank.

Link to comment
Share on other sites

Think if I have time enough, I will go to visit again my nerite spot wher i also found some crabs. That's a brackish water spot, but I hope the crabs will acllimate to the soft water.

  • Like 1
Link to comment
Share on other sites

 

12 minutes ago, Matuva said:

Think if I have time enough, I will go to visit again my nerite spot wher i also found some crabs. That's a brackish water spot, but I hope the crabs will acllimate to the soft water.

Good luck!! Looking forward to hearing how the adventure goes ?

Link to comment
Share on other sites

snapped these during lunch break. You can see the shrimplets and juvies hanging around the crab to get the particles she throws up. Shrimp are blurry and out of focus though - no time to set up tripod!peaceful crab.jpgpeaceful crab 2.jpgpeaceful crab 3.jpg

  • Like 1
Link to comment
Share on other sites

1 hour ago, Matuva said:

Would they attack a nerite?

 

Nerites have extremely hard shells and a trapdoor they can close, and I imagine that would make them immune to the little crabs I've got. My larger ramshorn snails  (no trap door, softer shell) are surviving, but some have been attacked and maimed a bit. 

It really depends what kind of crabs you find. Some crabs may be strong enough to break into a nerite shell or fast enough to grab its soft body before it pulls the hatch shut.

Link to comment
Share on other sites

1 hour ago, NoGi said:

Nice work with the media mate, I'm going to have to up my game lol

You should see if you can post to the SKF YouTube channel

You mean like upload videos there? I'm a youtube noob so I didn't know you could do that!

I was actually going to ask you if you were after submissions for it haha

Link to comment
Share on other sites

  • 3 weeks later...

These guys are still going really well. Shrimp crawl all over them now. I've even seen shrimp ride on their backs as they have territorial standoffs with each other (they never hurt each other - just kinda have a stare-down and wave their claws). 

Edited by waffle
  • Like 2
Link to comment
Share on other sites

  • 11 months later...

So a bit of an update on these guys.

I lost half of them when someone sprayed cleaning products around my desk T_T 

The remainder were tough bastards - they survived 3-4 more months whereas no shrimp made it more than a month after the incident. I miss them heaps. I'll likely have to move away from Australia for a few years sometime soon, but someday I'd love to make a species tank for these and breed them. 

  • Like 2
Link to comment
Share on other sites

  • revolutionhope featured and unfeatured this topic
  • 2 weeks later...

Hi mate, 

I'm sorry to hear about your crabs, 

But I was wondering if you had any survivors you would be happy to give away or sell as I'm super keen on getting some for my tank. 

Please contact me on here

Thanks

Wulilions 

Link to comment
Share on other sites

Hi Wulilions,

Sorry, no crabs at the moment sadly. I'm pretty sure a few people in victoria still breed them!!

Link to comment
Share on other sites

  • 4 weeks later...
  • 2 years later...

Resurrecting an old thread.... anybody have any contact details for anybody who may be getting rid of, or is breeding these? I've had them in the past, now setup my 600L community tank and am keen as to have some again.

  • Like 1
Link to comment
Share on other sites

@Rare Aqua used to breed a. lacustris, but I believe he lost all of his stock when he was travelling. Haven't been in contact with him since. @Linden I believe still keeps and breeds a. laevis, and last I heard he had hundreds. I've tried getting in contact with him to purchase some but I don't think he ever responded. Otherwise I don't think I have heard of anybody. Where are you located?

If you find someone in Au, lmk, cuz I've been after Amarinus crabs for a while.

  • Like 1
Link to comment
Share on other sites

Okay, update on the gumtree seller mentioned above - they have a. lacustris juvies available, if you're interested in those.

  • Like 1
Link to comment
Share on other sites

I'm in the Dandy Ranges in Melb. I saw those, but they are too small for my tank. I bought from Harrison last time. Didn't know at the time how rare they were.

Link to comment
Share on other sites

Oh cool, I’m kinda nearby. I was thinking they would be too small, but I drew out the adult dimensions (carapace 10mm diameter and 20mm diameter inc legs) and they’re the perfect size! That is... for my 30 litre tank... 😂

I can understand why you’re going for Laevis. 

I’ve heard of Harrison, never met him, but haven’t heard anything about him recently. I would assume that he doesn’t breed them anymore based on you coming on here instead of back to him?

Link to comment
Share on other sites

42 minutes ago, Crabby said:

clip

I’ve heard of Harrison, never met him, but haven’t heard anything about him recently. I would assume that he doesn’t breed them anymore based on you coming on here instead of back to him?

It was so long ago that I no longer have his details. I have a screen shot still on my phone of his Gumtree advert at the time, with all the details, EXCEPT his phone number first half is ****'d out, only have the last few digits LOL

I contacted Andrew Lockheart, in Selby (The Aquatic Vault), as I'm pretty sure he got some in last year, but he's said they are more of a warm weather stock, which gives me hope that he can get them, BUT I want them now lol

  • Like 1
Link to comment
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
 Share

  • Similar Content

    • Crabby
      By Crabby
      Hey guys, I’m really wanting to get freshwater crabs, and the only ones I’ve found are A. Lacustris and A. Laevis. I can only put them in a 110 L community tank for now, but may have another option in the future. The tank is stocked with a large school of ember tetras, some rocket killies, some endlers, some tangerine tiger shrimp, and a pair of apistogrammas. Rare aqua advised that A. Lacustris would likely be eaten by the apistos, so the obvious choice would be A. Laevis, because they’re larger... right? But I’m worried that they might predate upon my shrimp, so wanted to hear some advice and opinions from more people with experience keeping these crabs.
      Cheers!
    • Crabby
      By Crabby
      Hey guys, I’m really wanting to get freshwater crabs, and the only ones I’ve found are A. Lacustris and A. Laevis. I can only put them in a 110 L community tank for now, but may have another option in the future. The tank is stocked with a large school of ember tetras, some rocket killies, some endlers, some tangerine tiger shrimp, and a pair of apistogrammas. Rare aqua advised that A. Lacustris would likely be eaten by the apistos, so the obvious choice would be A. Laevis, because they’re larger... right? But I’m worried that they might predate upon my shrimp, so wanted to hear some advice and opinions from more people with experience keeping these crabs.
      Cheers!
    • NoGi
  • Join Our Community!

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

  • Must Read SKF Articles

  • Posts

    • jayc
      Otos really do like it in a big group. I had 10 in my 4ft tank once, and they would swim together. The problem with Otos is that, they compete with shrimp for the same food, ie. the biofilm on the surfaces of the tank. If you are okay with that and prepared to feed them regularly when the biofilm runs out, then Otos are great companions to shrimp. Of course they will both eat the same foods, so feeding both together is not difficult. Lot's of blanched veges like zucchinis, peas, carrots. 
    • sdlTBfanUK
      That sounds like a good plan, I might even get 5 ot 6 as they are quite small! Simon
    • Hammy
      Thanks I’ve no problem with waiting it’s part of the hobby really. I was actually looking at the Ottos on line and was thinking of getting some so to have you guys mention them makes me happy. However it says online that they are happier being in a group rather than just one or two so do you think that I could have say 3 or 4 in my 64ltr tank 
    • sdlTBfanUK
      I have 3 tanks at the moment, Tank 1 - bloody mary shrim with neon and ember tetras, though 90% of the shrimp are wild type now! Tank 2 - the old taiwan bee shrimp tank, has 11 mosquito rasbora and 1 killie with wild type cherry shrimp, I have just done the maintenance on that tank and there are definitely shrimp still doing well (I don't feed shrimp in there) but they are clear or brown so VERY difficult to spot! I tested this tank last week and parameters were ideal for taiwan bee (PH6, TDS 140, KH 0-1, GH 5-6 (a bit high)) as it has been since set up. Tank 3 - male betta with wild cherry shrimp, again just done that tank and there are shrimp doing well in there but again, I can ony see them with a strong light and magnifying glass due to their lack of colour. I am looking at maybe just stocking up before winter so may get a job lot of bloody mary shrimp for tank 1 (and discard lots of wilds) and have a  final try with the taiwan bee as the tank 2 is at the moment. The parameters are perfect but the plants are still not nice and green with this substrate, as they were before with the other substrate but obviously shrimp are living in there, albeit not ones I wanted, so I can rule out disease and poisoning. As you say, the taiwan bee are much easier to see so may be preyed on by the fish so I won't buy expensive ones (ebay probably) or a large quantity (if I get any at all of course, though it is now or wait until next year). It would be the last lot I try until the fish die off and the tank is reset with the other substrate! Simon
    • Crabby
      So do you have any Taiwan bees going right now Simon? Or just the red cherries/wilds? I forget some of the stuff that you and jayc have.  Depending on the type you get, they could be targeted a lot more than your wilds are currently. Also I’m not too sure how the parameters would work, for neocaridina and taiwan bees. But I’d be very interested to see what comes of it if you try.
×
×
  • Create New...