Go Back   Aquarium Advice - Aquarium Forum Community > General Aquarium Forums > Show Off/Photography
Click Here to Login

Join Aquarium Advice Today
Reply
 
Thread Tools Search this Thread Display Modes
Please support our sponsors and let them know you heard about them on AquariumAdvice.com
 
Old 03-24-2004, 08:15 PM   #1
Aquarium Advice Freak
 
Hypostomus's Avatar
 
Join Date: Mar 2004
Posts: 494
Skate Embryo Update + Lab Photos (Warning: Lots of Pics)

Hello. I know at least one person asked for an update on the Raja erinacea embryo I shot a picture of for the gallery a while ago. I thought I would also share with you guys some other stuff in the lab at school, as it's pretty neat. At least I think so.. But first up, here's the little skate as of today, 3/24. The first photo was the first one I took on 2/25. I was told it was seven months through its gestation then, though now I'm not entirely sure. I'll check on it though. I would have taken more in-betweens but I was on Spring Break and doing test stuff. :)

2/25/04


3/24/04


Next up is a yellow tang that I'm doing a comparison study with (I'm comparing it with the little skate). This tang and several other saltwater and freshwater fish were donated by a local pet store- they had died en route. When I first looked at this guy I saw no signs of illness- it was still the very bright yellow color of a living tang. Here, it is being stained so that its organs will be visible. This is a shot of it with the stain on it..



And here is one where I held up the jar to the light so you can see the effects of the staining process so far. I adjusted the brightness and contrast on this picture so it's more noticeable, but so far you can just start to see the outlines of the bones and organs. When it's done it will be essentially as if the fish had see-through scales.




Lastly, our lab houses a lot of different critters. I don't know exactly what species this is or what it's doing there, but I really like this crab. It's the size of a small dinner plate. It lives in a tank with a continuous flow of water, so that's why the image looks a little warped here. The water is overflowing down the side of the tank into the touch pool below (where there are starfish, scallops, etc.).



Another picture of the crabby, this time from the side. Sometimes I wonder if it isn't just a lab pet. There's a few of those hanging around.



Hope you guys enjoyed these. Sorry if anyone looked at this who is grossed out by biology stuff (like staining dead yellow tangs).
__________________

__________________
Hypostomus is offline   Reply With Quote
Old 03-24-2004, 08:18 PM   #2
Aquarium Advice Addict
 
Join Date: May 2003
Location: NY
Posts: 4,537
Wow wow wow wow! How cool! I wanna come play with YOU hypo LOL you do some very cool stuff.

The pics are incredible, but the skate pics absolutely fascinate me. More!! Btw, I didn't realise skates hung onto the yolk sac for so long; learned me something new today *grin*
__________________

__________________
aka Cycling Guru and the Ich Slayer

*glares at Terry and QTOFFER*

Card carrying member of FTAS & GCAS.
Allivymar is offline   Reply With Quote
Old 03-24-2004, 09:11 PM   #3
Aquarium Advice Freak
 
Hypostomus's Avatar
 
Join Date: Mar 2004
Posts: 494
Well technically the skate wouldn't have hatched now. I say "gestation" up there because normally it would still be inside its egg case. However, once they get to a certain period in their development they can be safely removed and developed into "hatchlings" without a need for an egg case (obviously this is only possible in a captive environment).
__________________
55g freshwater - tetras, catfish, loaches
10g freshwater - firebelly newts
Hypostomus is offline   Reply With Quote
Old 03-25-2004, 01:24 AM   #4
Aquarium Advice Addict
 
QTOFFER's Avatar
 
Join Date: Nov 2003
Location: Kew Gardens, NY
Posts: 4,295
Hypostomus, really, really, really cool pics!
I'm just surprised that you can H&E stain such a large specimen without having to perfuse it.

Hey, when I stroll around Jones Beach (on Long Island's Atlantic shore for all you non-LIers), I often find these blackish-brown, dry, leathery sacs. They are about 1 inch wide by 1-1/2 inches long and have long thin tails that extend from all four corners. Someone once told me that these are eggcases. Are they skate eggcases or something else?
__________________
QTOFFER is offline   Reply With Quote
Old 03-25-2004, 01:48 AM   #5
Aquarium Advice Freak
 
Hypostomus's Avatar
 
Join Date: Mar 2004
Posts: 494
They sound like eggcases to me, but they aren't necessarily those of skates. You'd have to look up the cartilaginous fish around Long Island/lower New England. In the Bay of Fundy/Gulf of Maine area where my school is we have a few different varieties of skates and rays, as well as dogfish and a few other kinds of sharks. I imagine some of them can be found down there. Don't know for sure what specific egg cases those are though.

Guess that wasn't very helpful.
__________________
55g freshwater - tetras, catfish, loaches
10g freshwater - firebelly newts
Hypostomus is offline   Reply With Quote
Old 03-25-2004, 11:00 AM   #6
AA Team Emeritus
 
Join Date: May 2002
Location: Virginia
Posts: 2,256
Send a message via ICQ to fishfreek Send a message via AIM to fishfreek Send a message via MSN to fishfreek Send a message via Yahoo to fishfreek
Great photos.

At first I saw the tang and I was like. WTH. A pink tang. Then I saw it was dyed.
__________________
Remember dont tap the glass, your fish will think you're an idiot -Anonymous mother

Check out our articles area. 30+ Aquatic articles for your enjoyment
Are you in or around the Shenandoah Valley area? If so click here to join our regional forum.
fishfreek is offline   Reply With Quote
Old 03-25-2004, 11:39 AM   #7
Aquarium Advice Freak
 
Join Date: Oct 2003
Location: dayton ohio
Posts: 427
i think the crab is a stone crab (not sure of the species name ) but they are yummy
__________________
ohio reefer is offline   Reply With Quote
Old 03-25-2004, 11:41 PM   #8
Aquarium Advice Addict
 
Join Date: May 2003
Location: NY
Posts: 4,537
Ooo ooo! I know that one QT LOL I am going to fish school atm LOL (actually, I'm going thru the volunteer training at the Maritime Center in Norwalk, and its everything there can be found in the LI sound). Those egg cases are likely stingray or skates; yep, they can be found in the Sound (skates being most numerous)!

And strangely enough Hypo, at fish school today, the subject was jellies. The video we were shown had a brief section on an embryonic skate still in the egg case (they did a backlight thing to show it). How wierd. I've never seen one before, now 2 in two days.

Must be a sign
__________________

__________________
aka Cycling Guru and the Ich Slayer

*glares at Terry and QTOFFER*

Card carrying member of FTAS & GCAS.
Allivymar is offline   Reply With Quote
Reply

Tags
oto, photos, pics

Please support our sponsors and let them know you heard about them on AquariumAdvice.com

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Summer project. Warning lots of pics. Zagz Aquaria Off-Topic 12 09-24-2007 04:55 PM
Changes my 75g took on { warning lots of pics} Members Freshwater Tanks Showcase 6 07-05-2006 01:31 AM
More fish pics-Warning lots of pics! Zagz Members Freshwater Tanks Showcase 5 05-16-2006 09:58 AM
(**UPDATED**)1 Year Reef Tank Pics (WARNING LOTS OF PICS) revhtree Members Saltwater Tanks Showcase 20 05-01-2005 10:07 AM
Lab Photos and Microscope Fun [Warning: Lots of Pics] Hypostomus Show Off/Photography 4 04-01-2004 06:06 PM







» Photo Contest Winners








Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -4. The time now is 11:48 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.