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About Ron Coleman
(Top Expert on this page)

Expertise
I am an expert on cichlid fishes, particularly New World cichlids. My broader expertise includes the behavior, ecology and reproduction of fishes in general. (I am NOT an expert on Goldfish. Please do not ask me questions about why your goldfish are sick -- they are almost always sick due to the way that they are sold). Also, please do not use abbreviations, such as "my GT has a swollen eye" because I don't know what a "GT" is. The more clearly you can explain your question, the better chance I have of understanding what it is that you seek. Thanks.

Experience
I teach at the California State University, Sacramento in the Department of Biological Sciences, and I run a website, called the Cichlid Research Home Page . I also write for many popular aquarist magazines, and I am editor of Cichlid News magazine. I am a scientist and I spend my time teaching fish biology, ecology, behavior and evolution and doing research on the reproductive biology of fishes, particularly cichlids. I do research in the laboratory and in Costa Rica, Nicaragua and Mexico. My main interest is understanding the evolution of parental care in fishes. I am interested in encouraging greater public awareness, understanding and participation in science.

Organizations belong to
American Cichlid Association, Pacific Coast Cichlid Association, American Society of Ichthyologists and Herpetologists, etc

Publications
Cichlid News, Tropical Fish Hobbyist, Freshwater and Marine Aquarium, Science, Behavioural Ecology and Sociobiology, Copeia, Canadian Journal of Zoology, Trends in Ecology and Evolution, AUK, Environmental Biology of Fishes

Education/Credentials
PhD (Toronto, 1993) MSc (Simon Fraser, 1986) BSc (British Columbia, 1983)

   

You are here:  Experts > Animals/Pets > Pet Fish > Fish

SubjectDate AskedExpert

could my pleco have hiccups10/10/2008Chris Robbins
  Q: I have had this pleco for about four years and he is now about 10 inches long. He is trained to ...
  A: It sounds like something is irritating him. There are many possibilities. It could be toxins in the ...
INJURED OSCAR10/9/2008Ron Coleman
  Q: I have a tank w/ several cichlids and 2 Oscars. One Oscar has been attacked and has lost all his ...
  A: Loosing a lot of scales is very serious. Fortunately oscars are pretty tough and he might pull ...
my betta10/9/2008Ron Coleman
  Q: hey Ron, I've had my male betta for about 1 yr. Recently I have noticed a transparent blotch on his ...
  A: I don't recognize the transparent blotch as anything I know. Keep an eye on it. Fin rot is ...
Fish!10/9/2008Ron Coleman
  Q: Hey There I have 4 cories,5 harlequins and 6 glowlights. The cories have spawned and I have found ...
  A: You could try moving the eggs to a small container with an airstone bubbling in it. Which fish ...
bettas10/9/2008Brit Brit
  Q: Hey Brit Brit I have a question I'm going to breed betas in a 10 gal but as soon as they breed like ...
  A: I'm going to refer you to one of my previous answers, as this question is very similar - Answer ...
bala sharks mating?10/9/2008Chris Robbins
  Q: trying to mate or if 2.one of them is trying to stop the other one from swimming.{ a close friend ...
  A: Here is a web page that goes into detail about picking healthy bettas; ...
Plecostemus10/9/2008Chris Robbins
  Q: I have a 30 gallon tank that has been set up for a year with a power filter and an undergravel ...
  A: If you have them for a couple of weeks or more before you lose them, surprisingly enough, they could ...
parrot fish10/8/2008Ron Coleman
  Q: I have a fish in my tank that is going under the gills of the large parrot fish. The parrot fish ...
  A: Is this a marine tank or a freshwater tank? (i.e., is this a marine parrot fish or a freshwater ...
Angel fish10/8/2008Ron Coleman
  Q: Hey Ron I have a question how do I tell male and female angel fish apart?
  A: The difference is not obvious and you need several angel fish to look at. If you look at the fish, ...
Sick Betta10/8/2008Chris Robbins
  Q: I have a betta who has a bump on his right side. the bump began 6 months ago with a white dot in ...
  A: Poor guy. It's possible he has abscesses from internal infection but it sounds more to me like ...
Tiger oscar and electric blue10/8/2008Ron Coleman
  Q: i have a tiger oscar in a 400 litre tank - with limestone caves - the pair of electric blue & pair ...
  A: Unfortunately that situation is not likely to continue. The oscar should rapidly get larger and ...
is my silver molly sick?10/8/2008Chris Robbins
  Q: i put a ten day feeder tablet in the tank of my silver molly but i'm noticing a long red string of ...
  A: It's probably just feces (fish poop). If the food tablet is reddish, so will be the poop. If the ...
bettas10/7/2008Jack
  Q: Hey I have a question if I get a male betta and I was wondering if he starts making the bubble nest ...
  A: Hey Again =] 1.No, the male should build a bubble nest, and when he does this, look to see if the ...
Platy Fry Basic Care10/7/2008Ron Coleman
  Q: My Red-Wag Platy gave birth to 40 or so fry just two days ago in my 10gal maternity tank. I have ...
  A: Bubbles should not be a problem. The biggest hurdle is getting them to eat. Try frozen baby brine ...
cichlids10/7/2008Ron Coleman
  Q: We were give two cichlids awhile back. The tank is about 8-10 gallons w/out a filter.We use tap ...
  A: Many cichlids do not really want a friend, particularly in a smaller tank like that. Many cichlids ...
something is wrong with bob the beta10/7/2008Jack
  Q: my daughters beta fish bob has a bulging eye thats balooned out. he wont eat he floats at the top of ...
  A: Hey Justin Bulging eye? It sounds a lot like pop-eye! Pop eye is a bacterial infection which is ...
my goldfish wont eat! help please!10/7/2008Chris Robbins
  Q: I have got a new 4 inch red and white Rancu frou ays ago, however it wont eat, i have tried to net ...
  A: I would suspect it's because the fish is new and still trying to adjust to it's new home. I would ...
re convict breeding with a dwarf cichlid10/7/2008Ron Coleman
  Q: . as my dwarf has laid eggs and is very protective over them... please help im stuck.. could send ...
  A: It is possible, though not overly likely. Please send me photos of the dwarf cichlid so I can see ...
Tiger Barbs10/7/2008Ron Coleman
  Q: i have 3 tiger barbs and 2 albino barbs. They always rub against each other. One of each kind, bump ...
  A: "Courting" is the word we use to describe behavior prior to mating. Basically they are checking each ...
Molly Disease10/7/2008Chris Robbins
  Q: I've had my molly for 2 months now, around 2 weeks ago I moved a male platy and a male molly to a ...
  A: They are probably fluid-filled cysts or possibly abscesses from infection. Medicine may or may not ...
bettas10/7/2008Jack
  Q: Hey I have a question if I get a male betta and I was wondering if he starts making the bubble nest ...
  A: Hey there =] The bubble nest will be destroyed by filter movement so move the filter under water ...
Oscars10/6/2008Ron Coleman
  Q: I think my tank is about 10 gallons, i want to put in some big fish, would i be able to put in 1 or ...
  A: Absolutely not. An adult oscar is 12 to 16 inches long and they can reach that size in a little ...
Blood Parrot Fish10/6/2008Ron Coleman
  Q: I have had a blood parrot fish for about 2 years now, over the past couple of weeks it seems to have ...
  A: Hmmm. unfortunately that could indicate an intestinal problem, basically part of the lower intestine ...
puffer fish10/6/2008Ron Coleman
  Q: we have one green puffer fish.( spotted) in a 10 gallon brackish water tank. has heater, filter. he ...
  A: Please check to make sure that the heater is actually working and that the temperature in the tank ...
Why do my parrot fish pick up the gravel and spit it out?10/6/2008Chris Robbins
  Q: mt parrott fish take in the gravel in the tank and spitit out every where. why do they do that. ...
  A: Parrot fish are in the cichlid family. Cichlids of most types commonly move gravel and rocks around ...
bala sharks mating?10/6/2008Chris Robbins
  Q: trying to mate or if 2.one of them is trying to stop the other one from swimming.{ a close friend ...
  A: My balas squabble from time to time too. It's usually a territorial thing. Once in awhile they nip ...
help!10/6/2008Brit Brit
  Q: CAN YOU PUT A FANCY GUPPY LIVE WITH A GOLDFISH?AND WHAT SIZE FISH TANK DO YOU NEED FOR 1 GOLDFISH?
  A: Goldfish should really only be with other goldfish. You would not want to put a tropical fish, such ...
Tiger Barbs10/5/2008Ron Coleman
  Q: i have 3 tiger barbs and 2 albino barbs. They always rub against each other. One of each kind, bump ...
  A: It is very possible that they are courting. Time will tell. Unfortunately, I don't know how to ...
betta fish10/5/2008Brit Brit
  Q: I had my betta fish for about three months and he has been doing fine. But last night for my ...
  A: Did you change out all of the water when you moved him into this new tank? Is there more light than ...
Angelfish10/4/2008Ron Coleman
  Q: I know you will give me the correct answer once again so many thanks in advance. My angelfish have ...
  A: Personally, I would leave the kids in there and watch the parental care. That is the best part of ...
African Cichlids10/4/2008Ron Coleman
  Q: I just recently upgraded from a 20g to a 45g tank. I have had fish off and on for the last 15 ...
  A: You can put a plecostomus in with African cichlids, though a synodontis catfish would be more ...
Are These Fish Compatible?10/4/2008Jack
  Q: Hey! I would like to know about the needle nose gar. Do they get along with tiger barbs and bala ...
  A: Hey Nichole Pike cichlids are highly aggressive and won't do well in your tank and they also need ...
Foggy Fish Tank10/3/2008Ron Coleman
  Q: We just got a sucker fish for a small 5 gallon tank. (we have 3 goldfish in it). Tank was getting ...
  A: It is never a good idea to totally clean out a fish tank. That destroys all the good bacteria as ...
Setting up a tropical tank10/3/2008Jack
  Q: My partner used to have a tropical tank a good few years ago and we want to get it set up again. The ...
  A: Hey there Stacie! =] I have been researching your limescale question and it says on a few websites ...
cichild convicts10/3/2008Jack
  Q: What is the white spots that are all over their bodies? Its on their mouth and eyes also. I got some ...
  A: hey Veronica It sounds like your convicts have white spot! Turn your temp up slightly, this ...
Black Goldfish Lump10/3/2008Brit Brit
  Q: I have a black goldfish (with the bulgy eyes), that has developed a large lump on its side. The ...
  A: Firstly, yes this particular issue may or may not be due to poor water quality, but two fish that ...
mickey mouse fish10/3/2008Trish S.
  Q: I have a yellow and an orange mickey mouse fish. my yellow one has been handing at the bottom of the ...
  A: If you only have 2 of these fish and one is a male and the other a female, chances are the male is ...
Black Goldfish Lump10/3/2008tina quiao
  Q: I have a black fantail goldfish that has developed a lump on its left side. The lump is pretty big, ...
  A: Chad, He has a swimbladder ...
Please help10/3/2008Ron Coleman
  Q: My parrot fish has a large lump in between her front fins and like the butt. It just sprouted out in ...
  A: Unfortunately that sounds like an intestinal problem. If she is still eating, try to feed her some ...
Angelfish10/2/2008Ron Coleman
  Q: What is the best (most distinguishable) way to determine sex in angelfish, Pterophyllum scalare? ...
  A: There is no distinct thing which you can say "now they are mature". Mostly you judge by their ...

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Questions by
Active Experts:
BentyTrish S.Shayaan Chagla
Shortytina quiaoNick
Alex KlineJackRon Coleman
Brit BritChris Robbins 

     
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