Thursday, April 20, 2006

inner dork: fish drink water

Did you know fish drink water?
Yep, through osmosis.
The water enteres their bodies through tiny holes in their skin.

Osmosis is the movement of a solution (for example, salt or water) through a semiporous membrane (ie: skin) until the solution becomes equal on both sides of the membrane.

Salt water obviously contains more salt than there is liquid in a fish. Therefore, osmosis draws water out of the fish and the fish needs to be continuously drinking water to replenish the liquid that is drawn out from its body.

However, with fresh water fish the water obviously has less salt than does the liquid in the fish and water is drawn through the fish's skin into its body. Therefore, freshwater fish do not need to drink water.
However, they swallow water when they open their mouths to eat.

Factoids:

There are a few reef fish who only live for a few days or months. However, sturgeons can live to be more than 50 years old. Rougheye rockfish can live to be 150 years old.

The largest fish is the whale shark. It can measure more than 50 feet long and can weigh as much as 2 tons.

The smallest fish is the goby. When it is fully grown it measures only .5 inches.

The seahorse is actually a fish.
Seahorses are monogamous and stay with one partner their entire lives.
Every morning they perform a dance of greeting to their partner's to reaffirm this commitment.
It is the male seahorse who becomes pregnant and nourishes the young until it is born. However, upon birth the care ends and it is up to the young to defend and care for themselves.

6 comments:

THE DUKE said...

This is funny because a buddy and I were discussing osmosis (and why we can subsist on saltwater) last night at dinner.

Whale sharks are very docile and friendly with humans.

Watching a seahorse have babies is pretty amazing. They spew out in scores and look like microscopic copies of their dad.

That's all I got.

JD said...

so in other words, seahorses are the Alan Aldas of the fish world. :) too funny.

Askinstoo said...
This comment has been removed by a blog administrator.
Party Girl said...

see, inner dork Thursday, is fun, yet educational. It helps, encourages and promotes conversations. I'm thinking conversations over beer. Lots and lots of beer.

Plus, I actually learn things. It's a win/win for all involved!

Jay said...

Here I am trying to come up with a topic for my "outer-dork" and you have to go and post your TNF this week! Egads! How am I supposed to think with such hotness on my monitor?! I'm trying to post about fish and all I can think about is my cock between those wonderful breasts of yours! Bullocks!

Anyway...

I will talk about my own fish. I own several kinds of African Cichlids. Cichlids are a freshwater fish found naturally in lakes Tanganyika(bordered by Burundi, Democratic Republic of the Congo (DRC), Tanzania and Zambia), Malawi(bordered by Mozambique, Malawi, and Tanzania), and Victoria (bordered by Tanzania, Uganda and Kenya.) The types I own are Lake Malawi fish. Labidochromis caeruleus, which are known in the States as "Electric Yellows" and Pseudotropheus demasoni, which have light and dark blue stripes. My cichlids are omnivorous. They eat the vegetable matter I feed the tanks pleco, (Liposarcus multuradiatus, it's a bottom feeder that helps clean the tank,) and can be vicious carnivores. They are semi-agressive with a very dominant alfa-male. He has free reign of the whole tank. The rest create boundaries within the tank and patrol their areas with a vengence. Any time I introduce a new fish, I have to move rocks around, which erases all of their boundaries, so that the new fish has a fighting chance!

My father used to breed cichlids and Angelfish, (which are a type of cichlid,) when I was a teenager. African cichlids are mouth brooders. The females create a space in the gravel or sand to lay their eggs. The males then insemenate the eggs and the females scoop them up into their mouths to be hatched. The females don't eat for the several weeks it takes for the eggs to hatch. Once that happens, the tiny fry use their mothers mouth as a hiding place. As they get bigger, the mother stops allowing the fry from living inside of her mouth. In the wild and in an unsecured tank, the fry often become food for the older cichlids. The smarter babies hide in the rocks until they are big enough not to be eaten.

That's all for now. I am waiting ever so patiently for the TNF pics with your torso and pretty panties.

Until then, my cock is in my hand, wishing it was in yours. ;P

Party Girl said...

Jay: it's great to see you back! I've missed you over the last few weeks!

Very cool info about your fish.

You're making me blush, but please don't stop.


ohhhhh, you want a stomach and panty shot. Got it. I thought the panty crotch shot would do it.

Give me a few weeks to not be so pasty white and I'll see what I can do!

if you liked this weeks. I'm pretty sure you'd like last weeks. Just sayin *winks*