by Jay Hemdal | Aug 21, 2009 | CORAL - Jay Hemdal, Marine
I first raised clownfish when I worked for the Shedd Aquarium back around 1986. Myself and another aquarist worked on raising some skunk clownfish, but since we did not have rotifers, we used “algae squeezings” basically microbes that we isolated from algal mats...
by Jay Hemdal | Jul 17, 2009 | AMAZONAS - Jay Hemdal, CORAL - Jay Hemdal, Freshwater, Marine
This installment informally ties together three previous blog entries: photography, fish size estimation and the HLLE project. Much public aquarium work operates in this fashion, many different small topics and projects may be tightly woven together: While attending a...
by Jay Hemdal | May 16, 2009 | AMAZONAS - Jay Hemdal, CORAL - Jay Hemdal, Freshwater, Marine
Public aquarists often have difficulty photographing their exhibits. Not only do they have the same problems as home aquarists (flash reflection off the glass, issues with white balance, fast moving fish, etc.) they have the added distortion caused by thicker viewing...
by Jay Hemdal | Feb 22, 2009 | AMAZONAS - Jay Hemdal, CORAL - Jay Hemdal, Freshwater, Marine
As a side project to one that I’m working on to quantify swimming room required by fishes, I looked into the predicted maximum size to which fish will grow in captivity. Many of us use FishBase for their maximum size records, and extrapolate captive size...
by Jay Hemdal | Feb 14, 2009 | CORAL - Jay Hemdal, Marine
In preparation for a research project on Head and Lateral Line Erosion (HLLE) in fishes, I undertook a quick survey of 100 intermediate to advanced aquarists regarding their opinions about this syndrome. Here is the raw data:1) What do you think are the...
