Small Macrobrachium from Peru (Need an ID)

This is an archived forum with lots of information. However, new posts are not allowed at this point.

Moderator: Mustafa

pturley
Larva
Larva
Posts: 42
Joined: Fri Sep 29, 2006 7:12 pm
Location: Cleveland, Ohio

Small Macrobrachium from Peru (Need an ID)

Post by pturley »

edit
Last edited by pturley on Thu Mar 29, 2007 6:38 am, edited 1 time in total.
Veneer
Shrimp
Shrimp
Posts: 184
Joined: Tue Dec 14, 2004 8:26 pm

Post by Veneer »

They're actually Euryrhynchus of some sort, possibly E. amazoniensis.
pturley
Larva
Larva
Posts: 42
Joined: Fri Sep 29, 2006 7:12 pm
Location: Cleveland, Ohio

Post by pturley »

edit
Last edited by pturley on Thu Mar 29, 2007 6:38 am, edited 1 time in total.
FISH WORLD ERIE
Shrimp
Shrimp
Posts: 164
Joined: Sun Oct 01, 2006 7:49 pm
Location: ERIE, PA

Post by FISH WORLD ERIE »

I took some pics tonight I will try posting tomorrow.

Jason
User avatar
YuccaPatrol
Shrimp Master
Shrimp Master
Posts: 600
Joined: Sun Mar 12, 2006 4:41 pm
Location: Burning-Ham, Alabama

Post by YuccaPatrol »

Very neat! I hope to hear that these will breed easily enough.
Mustafa
Founder
Founder
Posts: 6057
Joined: Fri May 28, 2004 2:13 pm
Location: San Diego, CA, USA
Contact:

Post by Mustafa »

Hey Paul and Jason,

You might want to perform a search for "Euryrhynchus" in this forum. I have said quite a few things about this species that might be helpful. This is a very shy species that lives extremely hidden. In a normal setup (i.e. not a holding tank) you won't see these guys during the day at all. Hence, they might not be all that interesting for most shrimp hobbyists. I still like them, even if I only see their heads poking out of their hideouts once in a while.

Paul...I noticed that the specimen in your picture is extremely stressed out. The milky, washed out colors are a dead giveaway. The picture of the male from the link you provided is also of a stressed out individual.
When these guys are not stressed out, they have distinct, clear coloration. That might explain the fact that your animals are brownish.

However, there are several species of Euryrhynchus sp. in the Amazon basin, so you might just have a different species from what I have here. Either way, it's quite stressed out and I hope that your animals recover and survive.

Here is a picture of an ovigerous female that I took about 5-6 months ago. It gives you an idea of what a relatively healthy specimen looks like:

Image

This female was still slightly stressed out still since she had just molted, so there is some residual "milky" coloration. As you can see the eggs are huge. They only carry about 10+ to 20 or so eggs (max) and the young hatch fully developed. The behavior of these shrimp is extremely similar to dwarf crayfish (i.e. they don't swim like shrimp, but just walk around or dart back like crayfish) and their young even look almost exactly like dwarf crayfish young.

In any case, currently I only have 3 females so I can't really breed these guys (I only received females and some babies originally) until I get males, but again...this shrimp will probably be just something for the really hardcore shrimp specialists due to its extremely nocturnal habits. Maybe other species of Euryrhynchus are more diurnal, but mine definitely are not. There is also a possibility that captive-bred specimen might become more active during the day due to lack of predators (captive-breds never even see predators whereas the wild-caughts have at some point).

In any case...good luck with these guys and keep us all up-to-date. :)
Last edited by Mustafa on Thu Nov 23, 2006 7:13 pm, edited 1 time in total.
FISH WORLD ERIE
Shrimp
Shrimp
Posts: 164
Joined: Sun Oct 01, 2006 7:49 pm
Location: ERIE, PA

Post by FISH WORLD ERIE »

Here are the pics I promised.
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
Image
FISH WORLD ERIE
Shrimp
Shrimp
Posts: 164
Joined: Sun Oct 01, 2006 7:49 pm
Location: ERIE, PA

Post by FISH WORLD ERIE »

Happy Thanksgiving everyone.

Jason
User avatar
Neonshrimp
Master Shrimp Nut
Master Shrimp Nut
Posts: 2296
Joined: Wed May 24, 2006 5:37 pm
Location: California, USA

Post by Neonshrimp »

Thank you Jason, Happy Thanksgiving to you and to all.
User avatar
zapisto
Shrimpoholic
Shrimpoholic
Posts: 487
Joined: Mon Feb 06, 2006 4:51 pm
Location: Montréal, (Qc), Canada

Post by zapisto »

Thanks jason
even if canada it is already past
thanks anyway
User avatar
Neonshrimp
Master Shrimp Nut
Master Shrimp Nut
Posts: 2296
Joined: Wed May 24, 2006 5:37 pm
Location: California, USA

Post by Neonshrimp »

Is this a full grown adult? It is so small :shock:
Mustafa
Founder
Founder
Posts: 6057
Joined: Fri May 28, 2004 2:13 pm
Location: San Diego, CA, USA
Contact:

Post by Mustafa »

Yes, fully grown. They are about as larg as most small dwarf shrimp. Many dwarf shrimp can actually get bigger than these guys in body size.
Mustafa
Founder
Founder
Posts: 6057
Joined: Fri May 28, 2004 2:13 pm
Location: San Diego, CA, USA
Contact:

Post by Mustafa »

Thanks for the pics Jason! Yours actually look pretty healthy. I'm pretty sure now that you (and Paul) have the same species that I have. Did you only get males or did you just happen to photograph only males?

Take care,
Mustafa
pturley
Larva
Larva
Posts: 42
Joined: Fri Sep 29, 2006 7:12 pm
Location: Cleveland, Ohio

Post by pturley »

edit
Last edited by pturley on Thu Mar 29, 2007 6:39 am, edited 1 time in total.
FISH WORLD ERIE
Shrimp
Shrimp
Posts: 164
Joined: Sun Oct 01, 2006 7:49 pm
Location: ERIE, PA

Post by FISH WORLD ERIE »

Yes I only got 1 male 1 female. I just took about 100 pictures of the same male and then posted the best ones.

Jason
Locked