<a href=showthread.php?s=&postid=9040555#post9040555 target=_blank>Originally posted</a> by colby
I have spoken to several biologists keeping these fish at Public aquariums and the generally maintained them in mid 70's water...furthermore OR has acknowledged on numerous accounts that 77F is perfectly fine for these guys...
If OR was able to undo millions of years of evolution in a couple generations they would have won a Nobel Prize, they didn't they haven't. Personally I would think twice about using information from a vendor who is trying to sell you something and confusing it with scientific data.
Which marine biologists have you spoken with about caps?
Your aquarium is not modeled after the ocean. Far cry from it. That is just something we hobbyists say when we are trying for a more natural look, or using more biological filtration. It is impossible for the average hobbyist to have anything close to that. The dillution in and of itself is impossible to accomplish in a closed system. The food production is also a far cry from there natural habitat. The swimming space is also severly lacking.
It has been clearly researched and shown that knsyna lagoon reaches temps of higher than 80F on a very frequent basis...they can clearly handle higher temperatures...
Those are surface temps no? What about the water temperature 60 feet below the surface. Many animals migrate lower to find cooler temps. The range of caps goes from .5 to 20 meters in depth.
There is not enough research that I am aware of (unless you have alink) that shows the number of bacterial infection affecting the seahorses of this region. We do know they are endangered and there number have greatly declined. Perhaps and this is just a wild suggestion, they don't handle the higher temps all that well.
How long then would you say the average lifespan of these seahorses are?
Not much is known about there average lifespan in the wild as they are hard to tag. If you have any published papers on such I would love to read. I would say 7 to 9 years in ideal conditions. In the wild development, tourism, and the flooding has caused a great number of deaths which is why they are currently listed as endangered so the average lifespan in the wild is not a good determining number in the average lifespan of the horse IMO. Much like the average lifespan of a person in an undeveloped part of Africa which is riddled with Aids, malaria, and other ailments is not a good determining number of the average lifespan of a human as a whole.
I am interested in hearing why you think it is necessary to keep them at such low temps?
Vibrio in short.
In more detail,
The succsessful keeping of caps over a long period of time is almost always coupled with lower temperatures. Caps tend to be tail draggers and are often more susebtable to bacterial infections of the tail. Many succsessful breeders of caps keep them at 65F or below. Keeping them at these temps has shown to help minimize many of the disease risks that come along with these seahorses.
Tropical horses while living in environments in the ocean that reach the 80'sF have also shown over time to do better in an aquarium environment at lower temperatures for the same reason.
There are many forms of bacteria in our systems. The ones most common to cause disease in seahorses have shown to be less virtulent in labratory studies conducted by pathologists.
Bacteria's release different proteins. Say a bacteria with a make up of iiRR releases ii at a temp of 65F. That same bacteria at a higher temp begins to release entirely different proteins at 70F now producing RR. While the seahorse had a resistence against ii, now it has to deal with a much more virtulent aggresive bacteria RR. Also at higher temps the seahorse may no longer be able to ward off the ii bacteria. You are now exposing the horse to bacteria which is much more aggresive and the seahorse ahs no previous resistance too. The simple way to eliminate this threat is through lower temperatures.
The labratory studies have shown that the bacterias common to cause disease in tropical seahorses stay far less virtulent at temps of 74F or below, almost a non factor, which is why you will see those temps being recommended so often. For temperate species like caps the bacterias are far diffrent and need lower temps.
Also it seems that the major disease issues with caps always occur with temperature spikes. Ever follow a seahorse site's disease forum in the summer. It's nuts. Somany more instances of bacterial disease occur during this period when the temps go up.
Here's an intresting project if you'd like to pursuit it, can you find another breeder of caps recommending keeping them at temps of 77F? Bet ya a dollar you can't.
HTH
