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Blue/Green Chromis Fish Behavior

Blue/Green Chromis Fish Behavior. By Taylor Morris and Caroline Montgomery. Taxonomy . Kingdom: Animalia Phylum: Chordata Class: Actinopterygii Order: Perciformes Family : Pomacentridae Species : Chromis viridis

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Blue/Green Chromis Fish Behavior

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  1. Blue/Green Chromis Fish Behavior By Taylor Morris and Caroline Montgomery

  2. Taxonomy • Kingdom: Animalia • Phylum: Chordata • Class: Actinopterygii • Order: Perciformes • Family:Pomacentridae • Species: Chromis viridis • Popular Name: Green Chromis - Blue-Green Chromis - Black-axil Chromis - Blue-Green puller - Blackfin Chromis

  3. Background • Found in the Indo Pacific in coral reefs • Found above corals not below, rarely hide • Peaceful in small groups • Female is larger than male • Feed on plankton and other small organisms

  4. Why The Reef Chromis?

  5. Hypothesis If we change the conditions of the tank, the Green Chromis fish will adapt to the changes, responding in a positive way, and will continue to thrive in their new surroundings.

  6. Proposal • The goal of this lab is to discover the behaviors between the Chromis, the other organisms and changes in the tank. • We observed there behaviors each day, and later used an Ethogram to collect data.

  7. Questions • Do changes in the tank effect the Behavior of the Chromis? • Moving power heads back • Moving or taking out corals • Not cleaning tank • Feeding times These questions lead to others: • What is the fish’s dynamic in the tank? • Did moving the power heads cause the second males death?

  8. General Observations • Ethogram • General observations during November and December

  9. 1st Change • Changed the placement of the powerheads in the tank. • We moved them both forward from the back of the tank.

  10. Placement in Tank

  11. Interaction

  12. Swim Patterns Videos:

  13. Video • General Behavior • Swim both together and apart • Social • Like to feed in the current • Video:

  14. The Case of the Missing Fish • Disappeared in November • Concluded dead after two months of searching • Either was killed off by other Chromis or simply died • During power head observations • http://bluegreenchromisbehavior.wiki.lovett.org/February

  15. Second Change • Coral Growth • Was not an original change, but cause a behavioral change • Chromis moved areas of the tank because of coral growth

  16. Third Change • Created a high stress environment • Allowed red algae to build up throughout the tank • Stressed, more tense • Ate red algae

  17. Conclusion • Many of our observations supported our hypothesis • Some behavioral patterns were found, but no major behavioral changes were seen • Very simple fish, with simple behaviors • First time they had been studied in this class • Most important interactions were with each other • Video:

  18. Bibliography • Allen, Gerald R. Marine Life of the Pacific and Indian Oceans. [Singapore]: Periplus, 2000. Print. • Beletsky, Les. Australia: the East. Northampton, MA: Interlink, 2007. Print. • Blasiola, George C. The Saltwater Aquarium Handbook. Hauppauge, NY: Barron's, 2000. Print. • "Chromis Viridis - Green Chromis." Tropical Fish, Aquarium Fish, Care for Saltwater and Freshwater Fish, Aquarium Setup. Web. 02 Nov. 2011. <http://www.fishlore.com/profile-bluegreenchromis.htm>. • "GREEN CHROMIS." FISH SPECIES. Web. 02 Nov. 2011. <http://www.fish-species.org.uk/saltwater-fish/08-green-chromis.htm>. • Myrberg, Arthur, and Ronald Thresher. "Interspecific Aggression and Its Relevance to the Concept of Territoriality in Reef Fishes." American Zoologist 14.I (1974). JSTOR. Web. 12 Feb. 2012. • Smith, Mark, and Kevin Warburton. "Predator Shoaling Moderates the Confusion Effect in Blue-Green Chromis, Chromis Viridis." Behavioral Ecology and Sociobiology 30.2 (1992). JSTOR. Web. 12 Feb. 2012. • Skomal, Gregory. "Feeding." Saltwater Aquarium. Hoboken, NJ: Howell Book House/Wiley Pub., 2006. 91. Print.

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