Can all size crabs go in the same tank?

[AgentK25]

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. 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?

[aussieJJDude]

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

[AgentK25]

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?

[AgentK25]

Or should I sort by personality?? Laid back and shy vs active and unafraid?

[aussieJJDude]

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

[AgentK25]

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.

[GotButterflies]

The only ones that I separate are my Straws with a Lila I have.

[myllkti]

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

[curlysister]

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

viewtopic.php?p=852643#p852643

[soilentgringa]

These are not HCA tank size guidelines.

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. 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

[AgentK25]

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!

[wodesorel]

These are not HCA tank size guidelines.

Yeah, they are. They just copied our HCA image and wrote it all out.

[soilentgringa]

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

[myllkti]

These are not HCA tank size guidelines.

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. 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

[soilentgringa]

These are not HCA tank size guidelines.

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