ok so i had planned on getting a 90 gallon tank and sticking a BGK with some tropicals, wasn't enough room. currently i'm getting a 125 gallon tank setup, Soo i rehomed some fish and now i think i can fit the BGK in (Hopefully) So i'm planning the 125 (Haven't Got it yet) Currently in my 55 i have, 1 Electric blue crayfish, 6 mollies, 3 platies, 5 tiger barbs, 5 giant danios, 1 stick catfish, 1 bushynose pleco, 2 Australian rainbows, 4 glass catffish and 5 ghost shrimp. I want to know if i can Put a BGK in the 125 with the fish i have listed? Or should i stick some more tropicals in the 125?
Black ghost knife question
- Thread starter SirCastic
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bettaowner
Aquarium Advice Addict
The kniife fish will get big and might eat the shrimp.
The BGK will eat the shrimp so consider them goners, no ifs ands or buts. It may also eat some of the other fish if it gets a hankering to do so. The largest fish Toothless (my BGK) has taken out thus far is a Preacox Rainbow (~2.5 inches) and he is only about six inches. If the BGK survives long enough without getting shredded by the Cray then the Cray will probably become a meal when it molts.
Crays are not very good tropical community critters. They like colder waters.
Good luck.
Crays are not very good tropical community critters. They like colder waters.
Good luck.
You could but its a risk for the BGK with that Cray fish in there. Also a 125 is on the small size for a full grown 18+ black Ghost Knife but until then it's plenty of room. An African Brown Knife would go better with your stock and fit comfortably in that tank for life but IMO I think BGKs are better looking and I think you will too. But its an option.
jetajockey
come get me tang police!
Temperature-wise I think it'd depend on the cray species as far as tolerance goes. We have tons of them in a few varying species here locally and I regularly find them in temps ranging from upper 60s to mid 80s.
I wouldn't keep one with a BGK because BGK's tend to be very stationary and could become the target of a nippy cray.
I wouldn't keep one with a BGK because BGK's tend to be very stationary and could become the target of a nippy cray.
HopefulHobbiest
Aquarium Advice FINatic
i've been watching this thread for a lil while and had a question...
i hope this doesn't come across the wrong way, but does anyone know if the average BGK lives long enough in an aquarium to actually reach its fully grown size??
i hope this doesn't come across the wrong way, but does anyone know if the average BGK lives long enough in an aquarium to actually reach its fully grown size??
HopefulHobbiest
Aquarium Advice FINatic
wow thats impressive... how long is their lifespan?
HopefulHobbiest
Aquarium Advice FINatic
wow, thats awesome... that'd be a long-time friend if cared for properly 
HopefulHobbiest
Aquarium Advice FINatic
That would be awesome... I want a fish I can hand feed!!! Lol
HopefulHobbiest
Aquarium Advice FINatic
Currently I have a 55g but I'm getting a 125g in a few weeks from a co-worker
jetajockey
come get me tang police!
I've had my BGK for about a year and he hasn't grown a whole lot. He also hides for most of the day. I've never attempted to hand feed him, but I probably could. Overall I like BGK's but I don't think he's active enough to be a centerpiece.
HopefulHobbiest
Aquarium Advice FINatic
how big is your tank Jet?
jetajockey
come get me tang police!
I have mine in a 120.
HopefulHobbiest
Aquarium Advice FINatic
That's good to know lol... So a 125 so be fine
Could a crayfish live with a jack dempsey? i'm going to convert my 55 to a JD tank
