jack dempsey growth and max size?

jagsandpits

Plecostomus
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Dec 14, 2012
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my Dempsey is 7 inches and around 10-11 months old (male). my question is how big is a "very large" dempsey and how big is a "common sized" Dempsey (full grown)? and wud you say mine is big for its age?
 

Crazy mike

Fire Eel
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Sep 22, 2012
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my Dempsey is 7 inches and around 10-11 months old (male). my question is how big is a "very large" dempsey and how big is a "common sized" Dempsey (full grown)? and wud you say mine is big for its age?
Large demoseys aren't so my h in length as in overall bulk. I've seen males hit around 10-11 that's a large Dempsey. Average is around 9 ish in my area


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E.C.

I'm looking at your soul
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Jun 28, 2013
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BTW, do you know what's the sex of your JD? If it's male yes it would hit the 11-12" mark range but if not, it's much smaller.
 

Judge Holden

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Reaper13

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They grow about the same rate as a GT. Grow real fast till 6-7in then slow way down about .5in a month after that. Max size I've seen a male is 12in's, but he was old like 10yrs+....takes a while to get a big JD. People get spoiled by oscars, jags, dovii's growth rates

However keep the temp around 80F, feed some good pellets (but don't overfeed), & more importantly give it plenty of wc's. This will maximize the growth rate.
 
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jagsandpits

Plecostomus
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yea my Dempsey hit 6 inches extremely fast but these past couple months its been slow ,from 6-7 was like a big deal lol
 
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Dave Counts

Feeder Fish
Nov 19, 2018
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my Dempsey is 7 inches and around 10-11 months old (male). my question is how big is a "very large" dempsey and how big is a "common sized" Dempsey (full grown)? and wud you say mine is big for its age?
Male JD's can get up to 15" or so. They don't necessarily grow very fast so just be patient, keep your tank clean and feed him/her a quality diet.
 
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