Fish in the News. Computer vision techniques can now identify a Whale Shark from the pattern of its spots. The computerized machine vision technique known as "blob extraction" can analyze the pattern of white spots on a Whale Sharks to uniquely identify that shark.
If the same White Shark is photographed later, it can be identified. In this way one of these sharks can be tracked over long time periods to gather information about its age, range, growth rate, etc. Click here to read the whole story.
Photo: Peter Nicholas.
Australian Institute of
is barely visible on
the dorsal fin of this
More Fish News. Satellite Technology Allows Scientists To Track Sharks In Cold Polar Seas. Antennas broadcasting from the dorsal fins of Salmon Sharks reveal that these top predators migrate from the glacial waters of Alaska to the warm seas off Hawaii. Click here to read the whole story.
A memorial service remembering Charles David Keeling was held on Saturday, October 8, 2005, at Scripps Institution of Oceanography in La Jolla, California. Professor Keeling, the world's leading authority on atmospheric greenhouse gas and a climate science pioneer, died Monday, June 20, 2005.
"Keeling was the first to confirm the rise of atmospheric carbon dioxide by very precise measurements that produced a data set now known widely as the Keeling Curve.", which is shown below.
"Prior to Professor Keeling's investigations, it was unknown whether the carbon dioxide released from the burning of fossil fuels and other industrial activities would accumulate in the atmosphere instead of being fully absorbed by the oceans and vegetated areas on land. He became the first to determine definitively the fraction of carbon dioxide from combustion that remains in the atmosphere." Click here to read the whole story.
Using Water Conditioner. "Hello Tom and Nevin, I have a question about chlorine and chloramine removers such as Tetra’s AquaSafe and Wardley’s ChlorOut. I have used both products in the past and don’t doubt ether products effectiveness. After hearing your advice I’ve switched completely to AquaSafe."
"But my question is how fast do they work and when treating water during a water change should I let it stand in the bucket before putting it in with my tank? I’ve heard a lot of different opinions about this but I would like to hear one from pro’s like your self’s. Thanks for the help, Christopher – Laurel, Maryland" Click here for more about Water Conditioner.
Unusual Looking Goldfish. "Hi, I have an unusual looking goldfish and I was wondering if you could tell me what it is. I have an outdoor pond, and each year I get a few babies. This year I got this one with a tail that looks like a fantail. But the fish looks like an ordinary goldfish. I have a fantail in the pond with other comets and shubunkins. Can they crossbreed? Any help and other information will be appreciated. Here are some pictures I took of it. I know it is no more than 4 months old. Thanks, Wilma C."
Here are two of the pictures that Wilma sent us of her unusual Goldfish, that is probably a cross of two different types of Goldfish, living in her pond.
All Goldfish are the same species, though they can vary greatly in shapes and colorations.
Click here for more about three groups of Goldfish that are generally not compatible with each other.
Winterizing Your Pond. Nevin gives some advice about getting your pond ready for the colder weather coming soon.
Is a 6" Tiger Shovelnose Compatible with a 7" Ornate Bichir?
"Hi Guys, Thanks for your answers on you last show, it was really helpful, I have spent sometime reading up and educating myself about my ornate bicher, I really love this fish and you’ve got to respect it, intern I want to do my best for it!, another question for you ..."
"I have a 6” Tiger Shovelnose Catfish in a 65 Gallon Tank, I’m thinking of moving this to my 100 Gallon Tank with my 7” Ornate Bicher, I have searched the internet to see if they would be compatible but cant get any info on this, I don’t want to risk either of them getting injured."
"There is one article where someone kept an Ornate Bicher with a Red Tailed Catfish witch I consider to be similar to the Tiger Shovelnose, and do all shovelnoses really grow huge? Any Ideas, As Usual the filtration system on the 100 Gallon Tank is overkill, I never think you can have to much filtration, Is this a good way of thinking or can you have to much filtration, My 100 Gallon Tank has a 40 Gallon Sump Filter and two external Project pjf 2001 canister filters. 1” of fine gravel for the substrate."
"I do a 20% Water Change every Saturday Morning, I’ve never had Cloudy or low quality water. Thanks in advance Stephen B., Derbyshire, England. I Look forward to listening to you next show."
Update on Dan's 17,000 gallon Pond. Our regular caller, Dan from Dallas, Texas, calls, and talks about some changes he's making to prepare his pond for colder weather.
Planaria with Turtles. "Hello! I know your talk show is about keeping pet fish, but I was wondering if you'd be able to answer my question about getting rid of planaria in a turtle tank. I saw your feedback about treating a tank with fish ... would this same procedure apply to turtles? Or, will adding salt to the aquarium harm my turtle (it's a red-ear slider). Thanks! Natalie C." Click here for more about planaria in aquariums.
Dwarf Freshwater Pufferfish. "Hello, I was wondering if you know of any puffers that are community fish? I have a freshwater tank with a skunk botia, golden chinese algae eater, bristlenose pleco and an otocinclus. I've read that the dwarf puffer might be community with the occasional fin nipping when not fed well, but I would like your profesional advice as to whether this fish will be ok with my fish or vice versa. Thanks so much for your time, John H., Austin, TX"
Watching Baby Guppies before They're Born! Kenny from Random Lake, Wisconsin, calls and says he's got a few female Guppies that have a much lighter colored skin, and he can see the whole bodies of the babies right through their mother's lighter colored skin. Don't miss hearing Kenny's description!
Watch the Fish in Your Aquarium. Tom and Nevin encourage everyone to watch their fish closely like Kenny watches his fish.
Nannacara anomala a Dwarf Cichlid. Tom and Nevin talk about some Nannacara anomala. A Dwarf Cichlid species that lived long ago in one of their aquariums. Click here to see some interesting pictures of this species, though the text is rather difficult for us to translate. ;>)
Hole in the Head Disease. Robert from Las Vegas, Nevada, calls and says his Oscars have small pits around their faces. Click here for more about Hole in the Head Disease.
William from Michigan
sent us this picture of a Green Terror Cichlid with Hole in the Head Disease.
... that fish is a Buttikoferi Cichlid
Reply. Hello Shane. Thank you for your email. We agree with you. The fish in the picture, shown above, is a Buttikoferi Cichlid from West Africa not a Green Terror from Central America. Thanks again.
Tom Sets his Watch to 2:30 pm, and as usual Evan from Colorado is home from school and calls Pet Fish Talk.
Evan Adds Fish and Caulerpa to his Reef Aquarium. He says he got some Chromis, a Damsel, an Anemone, many small pieces of Live Rock, and a big ball of Caulerpa. Click here for more about this noxious seaweed species. Evan also mentions Nano-Reefs and even Pico-Reefs, which are small aquariums that have the advantage of being much less expensive than larger reef aquariums.
Evan also got 8 more Neon Tetras and now has a nice school of 22 Neons in his freshwater aquarium.
What Gender are My Oscars? "HI, I have 2 Oscars and had some questions if you don't mind. We bought them both 1" long 9 months ago, and now one is 6" long and the other 4" long. Do you know why and how can I tell if one is the male and the other a female, or are both questions the same? Thanks, Robbin." Click here to read more about Oscars.
Nevin mentions that we have lots of very beautiful Oscars at AquariumFish.net. Click here to buy these Oscars or call 1-858-270-1182 and talk about buying an Oscar.
A Big Sincere Thank-you to Dan, Kenny, Robert, and Evan for calling the show. Tom and Nevin encourage YOU to call Pet Fish Talk during the show and talk about your pet fish.
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