- Values in ours ecosystem?(make a table)
- Biotic Factors
- Animalia (fish, snails)niche
- Plants (Aquatic)
- Protoctista (Algae, protozoa)
- Bacteria (Nitrogen bacteria (nitrogen cycle))
- Fungi(decomposers)
For each Biotic factor consider (plants, animals) (snails too)
- Species characteristics (tolerance level for important abiotic factors, behaviour, reproduction pattern).
Answer in Animalia description pg 9 to 14. In this work
- Algae: good or bad? Why they’ve developed
There are two categories of algae of concern to aquarists: "good" and "bad". Good algae is present in small quantities, is indicative of good water quality and is easily kept in check by algae eating fish or simple removal during routine maintenance. This algae is a natural consequence of having a container of water with nutrients and a light source.
Bad algae is either an indicator of bad water quality or is a type of algae that tends to overtake the tank and ruin the aesthetics the aquarist is trying to achieve. The label of "bad" is entirely subjective. For example, one type of green, hair-like algae is considered a plague by some American aquarists, yet is cultivated by European aquarists as a valuable addition to most tanks, serving as a dietary supplement for the fish.
Algae releases oxygen into the water as it manufactures it food. Algae forms the broad base on which the food pyramids in ponds and lakes is built. In manufacturing food, algae release oxygen, increasing the amount dissolved in the water.
However, when algae become overabundant the decaying algae deplete oxygen levels. So during the summer, when conditions for growing algae are ripe, oxygen levels may decrease, causing "summerkill" for aquatic plants and animals.
- Nitrogen cycle bacteria?(conditions names)
As The salts in the Aquarium are bigger than inside the fish, then the fish will make a very diluted urine called ammonia, if it’s bigger than 0.20mg they will die, very diluted due to what I had just referred then helped by Nirosomonas it will be transformed into nitrite and then with the Nitrobacter into Nitrate that will be used by the plants.
- Bacteria and fungi: decomposers (role), causing diseases.
Decomposers as the name says “decompose” things into nutrients or nothing, this can be good because it fertilizes the soil and give nutrients to the water.
Bacteria make the hard work because some of them sustain the Ecosystem equilibrium and other try to make the opposite which will be causing a disease; also if decomposers don’t make their job bodies will stay so they’ll make the water have more nutrients. This can be good in short period; in a long period if they keep there the water will be so overnutried that fish will start dying.
That’s why the roles of these tiny little friends just as the bacteria are essential for life
Biotic factors
Description animalia
ANIMALIA DESCRIPTION
PTEROPHYLLUM ANGEL FISH
Freshwater angelfish are that originate around the basin with a striking, compressed body shape and long extended dorsal and anal fins. The fish are often taller than they are long. There are three recognized species, all belonging to the genus Pterophyllum.
For breeding, the angelfish is a bad parent compared to many other cichlids, and quite often eats its young. The eggs are deposited on a bare rock, root or large leaf of some water plant, and the young are cared for by both parents.
However, when the breeding attempt is successful the parents keep close watch on the eggs until they become free swimming. Once they begin swimming the parents will clean them by sucking them into their mouths and spitting them out. Fry can be fed baby brine shrimp; frozen or fresh.
Angelfish inhabit slow waters in the Amazon region. Its shape allows it good protection among roots and plants, often on a vertical surface. It eats small invertebrates and is no danger to most other fish in an aquarium, however if a tankmate will fit into its mouth there is a good chance the angelfish will try to eat it.
PARACHEIRODAN INNESI (NEON)
The neon tetra is by far one of the best community fish there is on the market. Kept in a school of 6 or more, these little guys are an awesome spectacle swimming around the aquarium and chasing each other back and forth. Neons are extremely peaceful and rather small, therefore shouldn't be kept with very large fish which might find it an appetizing meal. In my experience with neons they tend to be an adaptable fish which can tolerate a pH of 5.0 but it is best to have pH of about 7.0. Also, they feed on the basic flake food but should also get occasional feedings of tubifex worms and frozen brine shrimp. A feeding of live foods once in a while is also suggested but not neccessary. When kept under good conditions the neon tetra is a beautiful and awesome addition to any community aquarium.
POECILIA RETICULATA
Common name Guppy
Scientific name Poecilia reticulata
Synonyms Millions fish
Size 2.5" (6cm), males smaller
Origin: Central America to Brazil, although wild populations have established elsewhere.
Compatibility: Peaceful, community - do not mix with fin-nippers
Temperature 18-27oC (64-81oF)
Water chemistry Medium hard to very hard, and alkaline - pH 7.0-8.5
Feeding: Omnivorous, small live and frozen foods flake.
Sexing Males have longer, more colourful finnage and are smaller than females, which tend to be dull coloured. However, the most definitive feature in males is the gonopodium - a stick-like modified anal fin (used in breeding), instead of the normal rounded anal fin in females.
Breeding: an easily bred and prolific fish. It is advisable to keep 2-3 females per male to reduce stress on specific females from the male. Around 30 young are normally produced.
Gyrinocheilys aymonieri the ever-popular guppy is generally a hardy fish which will tolerate a wide range of conditions. However, many fish found for sale these days are not as hardy as they once were. The guppy has been bred to produce longer fins and numerous colour varieties.
ALGAE EATER
Common name Algae eater / Sucking loach
Scientific name Gyrinocheilus aymonieri
Synonyms Chinese algae eater, Indian algae eate
Size Up to 10" (25cm), but often smaller.
Origin India and Thailand
Compatibility May become aggressive, particularly when older
Temperature 23-28oC (73-82oF)
Water chemistry Fairly soft, slightly acidic (pH 6-7) ideally, but not critical.
Feeding Omnivorous - will eat most aquarium foods, good algae eater when young
Breeding No detailed reports, have been bred commercially
Comments This fish is often purchased as an algae eater for smaller community tanks, for which it is not really suitable. Firstly, it grows larger than many realise, and secondly, it has a tendency to become aggressive when older. In the limited confines of a small tank, it may terrorise other aquarium inhabitants. In addition, they often become less inclined to eat algae as they grow, particularly if other food sources are available.
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EVALUATION
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