Can all size crabs go in the same tank?

This is the place to post if you have questions and aren't sure where to ask them! If it relates to one of the sections below, please post there instead.
User avatar

Topic author
AgentK25
Posts: 83
Joined: Mon Jun 30, 2014 8:35 am

Can all size crabs go in the same tank?

Post by AgentK25 » Tue Sep 04, 2018 6:25 pm

I have two main tanks now, a 65 and a 150. Right now I have my jumbo guys in the 150 and my five smalls in the 65. I adopted three newbies this weekend (2 med and one borderline large) and am trying to decide what size/kind of crabs would cohabitate best together. I need suggestions as the noobs are ready to move into the big tanks. :crabbigsmile: :D Is there a rule of thumb? Should I separate my species even if that means a giant jumbo and a small PP in the same huge tank?
Devoted Mom to 1 macaw, 2 dogs, 3 cats, and 14 PPs

User avatar

aussieJJDude
Administrator
Administrator
Posts: 4540
Joined: Fri Feb 24, 2012 8:12 pm
Location: Melbourne, Australia

Re: Can all size crabs go in the same tank?

Post by aussieJJDude » Tue Sep 04, 2018 6:31 pm

I think they can, many including myself have done it. :) In fact, Im not only speaking for myself, but also other members who have said similar, in lot of the cases, aggression is usually with crabs of a similar size, which tend to share the same resources - notably shells, which is the stem to a lot of fights IMO.

Sent from my SM-G935F using Tapatalk
Crabs || Fish || Shrimp || Snails || Plants || Insects

25G Nano Freshwater || 64G Freshwater Community || 90G Fancy Goldie Pond || 64G Crabitat
I've never had any problems with 'Impulse Buying'... They're just things I forgot I had planned to get || Self Designated 'HCA Pic Fan' 2012+

User avatar

Topic author
AgentK25
Posts: 83
Joined: Mon Jun 30, 2014 8:35 am

Re: Can all size crabs go in the same tank?

Post by AgentK25 » Tue Sep 04, 2018 6:47 pm

aussieJJDude wrote:I think they can, many including myself have done it. :) In fact, Im not only speaking for myself, but also other members who have said similar, in lot of the cases, aggression is usually with crabs of a similar size, which tend to share the same resources - notably shells, which is the stem to a lot of fights IMO.

Sent from my SM-G935F using Tapatalk
Thank you for the input! So would it be best to separate by species, then? Or does that matter much, as long as I have crabitat conditions suitable for everyone?
Devoted Mom to 1 macaw, 2 dogs, 3 cats, and 14 PPs

User avatar

Topic author
AgentK25
Posts: 83
Joined: Mon Jun 30, 2014 8:35 am

Re: Can all size crabs go in the same tank?

Post by AgentK25 » Tue Sep 04, 2018 6:49 pm

Or should I sort by personality?? Laid back and shy vs active and unafraid?
Devoted Mom to 1 macaw, 2 dogs, 3 cats, and 14 PPs

User avatar

aussieJJDude
Administrator
Administrator
Posts: 4540
Joined: Fri Feb 24, 2012 8:12 pm
Location: Melbourne, Australia

Re: Can all size crabs go in the same tank?

Post by aussieJJDude » Tue Sep 04, 2018 7:26 pm

AgentK25 wrote:
Thank you for the input! So would it be best to separate by species, then? Or does that matter much, as long as I have crabitat conditions suitable for everyone?
I would separate my species if it was me. Or at least ensure everyone has a species buddy in their tanks.

Sent from my SM-G935F using Tapatalk
Crabs || Fish || Shrimp || Snails || Plants || Insects

25G Nano Freshwater || 64G Freshwater Community || 90G Fancy Goldie Pond || 64G Crabitat
I've never had any problems with 'Impulse Buying'... They're just things I forgot I had planned to get || Self Designated 'HCA Pic Fan' 2012+

User avatar

Topic author
AgentK25
Posts: 83
Joined: Mon Jun 30, 2014 8:35 am

Re: Can all size crabs go in the same tank?

Post by AgentK25 » Tue Sep 04, 2018 7:38 pm

aussieJJDude wrote:
AgentK25 wrote:
Thank you for the input! So would it be best to separate by species, then? Or does that matter much, as long as I have crabitat conditions suitable for everyone?
I would separate my species if it was me. Or at least ensure everyone has a species buddy in their tanks.

Sent from my SM-G935F using Tapatalk
Thanks! That's what I'll do. :crabbigsmile:
Devoted Mom to 1 macaw, 2 dogs, 3 cats, and 14 PPs

User avatar

GotButterflies
Administrator
Administrator
Posts: 6770
Joined: Wed Aug 10, 2016 6:56 pm
Location: Florida
Contact:

Re: Can all size crabs go in the same tank?

Post by GotButterflies » Fri Sep 07, 2018 4:55 pm

The only ones that I separate are my Straws with a Lila I have. :)
Truly blessed to have incredible creatures, wonderful friends and my amazing family in my life!! I'm very thankful & grateful for all of them! www.thehealthyhermit.com


HermitCrabHelp
Posts: 34
Joined: Tue Sep 18, 2018 1:14 pm

Re: Can all size crabs go in the same tank?

Post by HermitCrabHelp » Tue Sep 18, 2018 1:24 pm

The original reply was inaccurate, and so I have edited it and replaced it with this message. (Can’t figure out how to just plain delete) Apologies to all
Last edited by HermitCrabHelp on Mon Sep 24, 2018 12:35 pm, edited 1 time in total.
One medium hermie and a teeny hermie :P

User avatar

curlysister
Moderator
Moderator
Posts: 2076
Joined: Sun Sep 05, 2010 3:54 pm
Location: Manitoba, Canada

Re: Can all size crabs go in the same tank?

Post by curlysister » Thu Sep 20, 2018 8:36 pm

Here is a link to the HCA guide to tank size, crab size, and how many you can have:

viewtopic.php?p=852643#p852643
"If there are no dogs in Heaven, then when I die I want to go where they went." -Will Rogers

User avatar

soilentgringa
Posts: 4376
Joined: Sun Jul 20, 2014 5:18 pm
Location: Dallas, TX

Re: Can all size crabs go in the same tank?

Post by soilentgringa » Sat Sep 22, 2018 1:10 am

These are not HCA tank size guidelines.
HermitCrabHelp wrote:
AgentK25 wrote:I have two main tanks now, a 65 and a 150. Right now I have my jumbo guys in the 150 and my five smalls in the 65. I adopted three newbies this weekend (2 med and one borderline large) and am trying to decide what size/kind of crabs would cohabitate best together. I need suggestions as the noobs are ready to move into the big tanks. :crabbigsmile: :D Is there a rule of thumb? Should I separate my species even if that means a giant jumbo and a small PP in the same huge tank?

Crab Size
Approximate Crab Diameter
Minimum Tank Size
Space per Crab
Lowest Substrate Depth
Micro
0.5 in
5 gal
0.65 gal
3 in

Teeny
1 in
5 gal
1 gal
4 in

Small
1.5 in
10 gal
2.5 gal
5 in

Medium
2.5 in
10 gal
4 gal
6.25 in

Large
3 in
20 gal
5.5 gal
8 in

Extra Large
4.35
30 gal
6.5 gal
10 in

Jumbo
more
50 gal
15 gal*
12 in

*A side cannot be shorter than 18 inches

Take the size of your largest crab and add the amount f space per crab for each of your crabs
Sent from my LGMS550 using Tapatalk

User avatar

Topic author
AgentK25
Posts: 83
Joined: Mon Jun 30, 2014 8:35 am

Re: Can all size crabs go in the same tank?

Post by AgentK25 » Sun Sep 23, 2018 12:36 pm

Thanks for all the input! My original question was whether or not I could put small crabs in with my jumbos, and how I should organize my tanks crab-size wise...basically, who will get along the best. However, since I posted the question, I've had a large, a medium and a small PP in with my jumbo PPs and they are getting along famously. :) They are in my 150g, so no worries on being overcrowded. lol I do appreciate the HCA guidelines on crabs to tank space ratios...SUPER HELPFUL!
Devoted Mom to 1 macaw, 2 dogs, 3 cats, and 14 PPs

User avatar

wodesorel
Tech Support
Tech Support
Posts: 9721
Joined: Thu Oct 01, 2009 8:49 am
Location: Leetonia, Ohio
Contact:

Re: Can all size crabs go in the same tank?

Post by wodesorel » Sun Sep 23, 2018 7:53 pm

soilentgringa wrote:These are not HCA tank size guidelines.
Yeah, they are. They just copied our HCA image and wrote it all out.
Want to see all my crazy pets? @waywardwaifs on Instagram

User avatar

soilentgringa
Posts: 4376
Joined: Sun Jul 20, 2014 5:18 pm
Location: Dallas, TX

Re: Can all size crabs go in the same tank?

Post by soilentgringa » Sun Sep 23, 2018 8:16 pm

wodesorel wrote:
soilentgringa wrote:These are not HCA tank size guidelines.
Yeah, they are. They just copied our HCA image and wrote it all out.
I see what happened. When I was scrolling I read it as teeny 5 gallons each, small 10 gallons each, etc.

I apologize for misreading HermitCrabHelp!

Sent from my LGMS550 using Tapatalk


HermitCrabHelp
Posts: 34
Joined: Tue Sep 18, 2018 1:14 pm

Re: Can all size crabs go in the same tank?

Post by HermitCrabHelp » Mon Sep 24, 2018 12:32 pm

soilentgringa wrote:These are not HCA tank size guidelines.
HermitCrabHelp wrote:
AgentK25 wrote:I have two main tanks now, a 65 and a 150. Right now I have my jumbo guys in the 150 and my five smalls in the 65. I adopted three newbies this weekend (2 med and one borderline large) and am trying to decide what size/kind of crabs would cohabitate best together. I need suggestions as the noobs are ready to move into the big tanks. :crabbigsmile: :D Is there a rule of thumb? Should I separate my species even if that means a giant jumbo and a small PP in the same huge tank?

Crab Size
Approximate Crab Diameter
Minimum Tank Size
Space per Crab
Lowest Substrate Depth
Micro
0.5 in
5 gal
0.65 gal
3 in

Teeny
1 in
5 gal
1 gal
4 in

Small
1.5 in
10 gal
2.5 gal
5 in

Medium
2.5 in
10 gal
4 gal
6.25 in

Large
3 in
20 gal
5.5 gal
8 in

Extra Large
4.35
30 gal
6.5 gal
10 in

Jumbo
more
50 gal
15 gal*
12 in

*A side cannot be shorter than 18 inches

Take the size of your largest crab and add the amount f space per crab for each of your crabs
Sent from my LGMS550 using Tapatalk
I’m really sorry. I was just trying to help, but I’ll edit my original reply to say that it was inaccurate and apologize for it
One medium hermie and a teeny hermie :P

User avatar

soilentgringa
Posts: 4376
Joined: Sun Jul 20, 2014 5:18 pm
Location: Dallas, TX

Re: Can all size crabs go in the same tank?

Post by soilentgringa » Mon Sep 24, 2018 7:35 pm

HermitCrabHelp wrote:
soilentgringa wrote:These are not HCA tank size guidelines.
HermitCrabHelp wrote:
Crab Size
Approximate Crab Diameter
Minimum Tank Size
Space per Crab
Lowest Substrate Depth
Micro
0.5 in
5 gal
0.65 gal
3 in

Teeny
1 in
5 gal
1 gal
4 in

Small
1.5 in
10 gal
2.5 gal
5 in

Medium
2.5 in
10 gal
4 gal
6.25 in

Large
3 in
20 gal
5.5 gal
8 in

Extra Large
4.35
30 gal
6.5 gal
10 in

Jumbo
more
50 gal
15 gal*
12 in

*A side cannot be shorter than 18 inches

Take the size of your largest crab and add the amount f space per crab for each of your crabs
Sent from my LGMS550 using Tapatalk
I’m really sorry. I was just trying to help, but I’ll edit my original reply to say that it was inaccurate and apologize for it
You have nothing to apologize for. I misread your post and was absolutely in the wrong. I should have paid more attention.


Sent from my LGMS550 using Tapatalk

Post Reply