Week 5

After a period of life and movement, my microaquarium is now pretty desolate. Water has evaporated out of the top of the aquarium, leaving a dry area holding absolutely nothing. The rest of the aquarium is full of dead organisms. I saw a few diatoms similar to the rectangular ones I found in the past weeks, but they were all dead (Vinyard 1979). There were also multiple dead amoebas (Jahn 1944). The only prevalent life form noticeable were anisomena (Patterson 2003). From the lower middle to the bottom of the aquarium, anisonema are thriving. At the very bottom of the tank, anisonema are everywhere and moving very quickly. Lots of small, random dead organisms line the aquarium floor. The only other life I saw was a colpidium or two (Fischer 1996). The diptera larva has grown immensely in the past five weeks (Rainis 1996). I doubt it will be long until it morphs on into further life forms. I noticed no new species this week.

Week 4

Compared to last week, this week my microquarium looked completely dead. After the addition of the beta food pellet last week, the amount of life and motion was enormous. This week there were more organisms and materials in the aquarium, but most of those organisms were dead. The organisms I've seen before were still present and alive. I noticed multiple amoebas and anisomena, but I didn't notice half as many as last week (Jahn 1944) (Patterson 2003). The diptera larva was still present, alive, and growing (Rainis 1996). Few new species were noticed this week, but I did spot a couple. I saw two dead diatoms distinguishable by thick silica cell walls and an exact square shape as seen if Fig. 1 (Vinyard 1979).

I also noticed a mid-sized round blob zooming around without any distinguishable flagella. This blob happened to be a Colpidium species (Fischer 1996). Figure 2 shows a picture of the colpidium swimming around the middle of the tank.

The colpidium appeared translucent with little green dots inside it. Besides these organisms, I noticed little movement or new organisms, just a lot of dead ones.

Week 3: The saga continues

On Friday, the 25th of November, Dr. McFarland added one "Atison's Betta Food" pellet to my micro aquarium. This pellet was made by Ocean Nutrition, Aqua Pet Americas at 3528 West 500 South, Salt Lake City, UT 84104. The ingredients in this bellet included fish meal, wheat flower, soy meal, krill meal, minerals, vitamins, and preservatives. Each pellet is 36% protein, 4.5% fat, 3.5% fiber, 8% moisture, and 15% ash. Overall, I thought my microaquarium showed more life and movement this week than last. I ran into a couple new species as well as some I've seen previously. The first new species I noticed was a giant blob with no real distinguishable shape moving in a similar fashion to a pile of molasses with a mind of its own. As you can see in figure 1, this blob was translucent and filled with what looked like little green balls. This blob is actually an amoeba sp. (Jahn and Bovee 1944).

I saw two other amoebas extremely similar to this one around the middle of the aquarium near where I spotted the first one. While examining the amoeba, I noticed another greenish, translucent blob. However, this blob was moving faster, possessed one wildly whipping flagella, and was shaped similarly to a Hershey's kiss. This organism is an Anisomena (Patterson 2003). The Anisomena is much smaller than the amoeba, but moves faster and more deliberately. I also found the diptera larva once again (Pennak 1989). The larva is still eating, growing, and wriggling around. I noticed no real changes in body or movement.