Growth Rates in Older Bichirs?

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Keeper of the Ropes

Feeder Fish
MFK Member
Mar 29, 2006
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I thought this might make for an interesting discussion. What types of growth rates are we experiencing with our near-adult fish? What do we think is normal?

For example... P. Senegalus. I have a pair of boys that I purchased when I moved to Texas in late 2004. They are now three years old and are a little over 9'' TL. And I don't think they've grown at all in the past 6 months, so their growth all happened previously. Any comparisons to that? Anyone know their sens' exact ages and lengths?

Next, the one I'm really curious about, our big P. Endlicheri Congicus, "Duce". We used to call him "Medusa" until he developed in certain areas. When I measured him in December of last year, he was 12'' on the dot. 10 months later, 13.5". Normal? Kevin and I were discussing it and both of us think this extra inch and a half was put on within the last two months - his appetite has skyrocketed, along with his length. Is it possible for the bigger fish to have growth spurts similar to those of the youngsters, then have their growth drop off again?

Indy, our P. Endlicheri Endlicheri formerly known as "Indica Rose" (again until he devoloped in certain areas) has only put on a half an inch since last December, just now getting to 11.5''.

We all know the little babies we get eat like horses and never seem to be full up. I've come to the conclusion that 'appetite equals growth rate', regardless of the fish age. I've found that if a fish eats at least once at each feeding, it's size (in both length and width) will hold steady. If they go on a fast, there's no growth lengthwise, but they lose some girth. And finally, if they start eating and bulging out at each feeding, I can usually expect a sizeable spurt in about two weeks. Does anyone agree?

Share your stories, and if you have before and after pics of older fish, please share :)

Jessie*
KOTR
 
I agree. I have been experiencing that as of late with my endlis. I have 2 right now that at every feeding they stuff their faces till they look like sausages!:eek: I April I bought a 16" koliba and my 2 endlis were at 13". We are now in October and both endlis have surpassed the koliba. I have 2 congicus that I wish would have the appetited of the endlis right now.
 
i do agree 'appetite equals growth', as long as the fish still has room to grow. and i also agree that for a near-adult bichir (or simply one past its juvy stage), you'd see noticeable growth when it starts eating a lot after a period of fasting or very small feeding. i guess that'd be considered growth spurt? or is it just normal growth since its now eating?

Anyway, given the same amount of food eaten per body weight, a small juvy will still have a faster growth rate than one past its juvy stage. and the larger the bichir is, the smaller its growth rate. i think thats just logical.
 
my ornate has grown from 4" to about 8" in the past 8 months. has gotten fatter as well, BUT i never visually witness him eat lol, maybe he would grow more if he ate more?

my senegal has grown from 5" to about 8" in the past 8 months as well. always eating, always growing.

my endli has grown from about 10" to bout 14" in the past 8-10 months. has gotten much much fatter as well. he is always hungry and seems to grow by the day.

jus thought i'd share
 
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