Would a 125 gallon aquarium be big enough for these?

[Kookie Snatcha]

I was wondering if a 125 gallon aquarium would be big enough for fiddler crabs, and columbian sharks to live together. Also if they can't live together what would be some suitable tank mates for the fiddler crabs cause the crabs are in the tank right now. Also here's some more information, the aquarium has sand on the bottom, the sg is about 1.008, and the crabs have land but it doesn't require the water level to be lowered. Thanks for the help!

 

[Luananeko]

I've never had fiddler crabs, so I can't give you much advice... I did come across this article that might help you though: Best Fiddler Crab Tank Mates: What Fish Can Live with My Fiddler Crab? - Yahoo! Voices - voices.yahoo.com

Sounds like you're safer sticking to crabs only, or be willing to replace fish if/when the fish make the mistake of getting close to the crab.

 

[alLexX]

the crab couldnt do anything to a columbian shark. the shark would almost definitely eat the crab the instant it hit the water

 

[GodFan]

the crab couldnt do anything to a columbian shark. the shark would almost definitely eat the crab the instant it hit the water

My thoughts exactly. I am also concerned with the shark not getting enough swimming space since part of the tank will be shoreline...

 

[Freakgecko91]

Since this is probably the 6th thread on the EXACT same issue, please post a full tank picture, otherwise the advice you're gonna get is based on assumptions. Plus, in several other threads, you were told what can or should live with the fiddlers. Asking multiple times in the same forum will not yield different answers. My advice to you is move the crabs to a smaller, species specific tank, and use the 125 as a larger brackish setup...Fish just won't mix well with crabs in the long run IMO

 

[Kookie Snatcha]

Here's some photos of the tank.

 

[Luananeko]

So the little enclosure with the palm is the "beach" for the crabs? Do you pump air into it to keep it from filling with water? Where do the crabs get into it? It's pretty hard to tell from the pictures.

 

[Kookie Snatcha]

Ya, i'm not very good at taking pictures lol. The crabs get in through the part in the front and through a hole in the side, and the airline hose in the background is pumping air into it. while new air comes in the old air comes out through that tube in the side that is letting bubbles out.