Growth rate on clams

[55semireef]

Those are some amazing pictures. Wow. Are those all Gigas?

 

[ezcompany]

those look to be over 30 inches long, so gigas definitely.
nice shots chris, where'd you find them? its interesting how the last pic they are lined up for the shot. could they have been maricultured from the start and placed there? the last pic also seems to be more than 30 feet in depth, amazing how they thrive! any idea where these pictures were taken?

i think its time to start growing some acro on my maxima

 

[mbbuna]

yes, they are all Gigas

 

[mbbuna]

<a href=showthread.php?s=&postid=8785358#post8785358 target=_blank>Originally posted</a> by ezcompany
those look to be over 30 inches long, so gigas definitely.
nice shots chris, where'd you find them?

Google

 

[mbbuna]

this is listed as the worlds larges bivalve but i dont know if its extinct or not. http://www.geo.vu.nl/~smit/inoceramus/musling.htm

if it is extinct then Gigas is the largest

 

[55semireef]

So how come those Gigas seem to be at the kind of depth and yet thrive? We take stress about having the strongest lighting in order for them to thrive and as a result, our tanks are illuminated to the extreme when you place MH or T5s with ind. reflectors but in those pictures that you provided mbbuna, it seems like the Gigas receive way less light than our MH or T5s provide. How can they live in those conditions.?

 

[mbbuna]

<a href=showthread.php?s=&postid=8785462#post8785462 target=_blank>Originally posted</a> by 55semireef
So how come those Gigas seem to be at the kind of depth and yet thrive?

it seems like the Gigas receive way less light than our MH or T5s provide. How can they live in those conditions.?

your comparing a few hundred watt bulbs too a absolutely huge nuclear inferno in the sky.

the first photo seems to be about 1M deep the second about 2M and the 3rd maybe 10M. even at 10M the intensity is probably more the 400W MH

 

[55semireef]

<a href=showthread.php?s=&postid=8785494#post8785494 target=_blank>Originally posted</a> by mbbuna
your comparing a few hundred watt bulbs too a absolutely huge nuclear inferno in the sky.

the first photo seems to be about 1M deep the second about 2M and the 3rd maybe 10M. even at 10M the intensity is probably more the 400W MH

Proportionally though, it seems like the clams in tanks that have MH or T5s above them receive more light.

 

[mbbuna]

<a href=showthread.php?s=&postid=8785528#post8785528 target=_blank>Originally posted</a> by 55semireef
Proportionally though, it seems like the clams in tanks that have MH or T5s above them receive more light.

not even close. the sun can give 120,000 lux on a clear day at sea level on the equator

 

[acarson19]

MMBUNA- Awesome pics!

On a side note: semireef, I think you said some of the huge T. derasa must be over 20 years old. Just an interesting fact is that there are some freshwater mussels that are very slow growers and can be over a hundred years old and only be about two inches long!