Sunday, March 30, 2008

Who am I?


This fish has two separate dorsal fins, fairly large pectoral and anal fins, and a long slender body. This particular species is typically larger than most and has dark brown spots extending down it's body. It also has a thin black stripe along it's back that breaks into spots towards the rear. A breeding male has a bright orange belly.

Thursday, March 27, 2008

Here is a photo


The fish I described in my last post is shown in this photo. You should be able to name the genus and species.

Postings How To

Students are encouraged to begin postings to describe reproduction modes in your fish groups. Also you may post photos and your annotations of the new fishes that you are learning in lab. Let us guess what these unknowns are -- if your annotations are appropriate we should all be able to identify your fish.

Here is an "Unknown fish." Annotations: continuous spinous and soft dorsal fin, laterally compressed. (you should be able to identify to genus easily) Somewhat pointed snout, small mouth, upper jaw does not extend to pupil of eye. Coloration in life gold-green above with gray spots and lighter below. Key characteristic is the bright red or orange spot on the black ear flap. The pectoral fin is long and fairly pointed - if you bend it forward it will extend far past the eye. the ear flap is short and has a flexible rear edge on the gill cover. most of the fins are clear - no mottling or spots.

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Wednesday, March 26, 2008

Reproduction in Fishes

You should share what you have learned about your fish group with the rest of the VT Ichthyology class. In this blog post your response that best describes for the fish group (order, family, genus OR species) the most relevant aspects of their reproduction. Namely,
  • Breeding Opportunities
  • Mating System
  • Gender System
  • Secondary Sex characteristics
  • Spawning Site Prep
  • Place of Fertilization
  • Parental Care
  • Reproductive Guild
  • Timing of Breeding

•

Teaching and Learning Ichthyology

I suggest that you use the blog to share what you learn and ask students to answer questions to test their learning.    

For example, you may add an image of a fish you just learned.   Add annotations about key characteristics and request bloggers to name the fish and perhaps correct or share other distinguishing characteristics.