"Arowana Care: Different Shades of Gold"," One of the levels of grading golden arowanas is the Red Tail Golden (RTG) arowanas. However, the second and third rows of the scales give off a slightly purplish sheen. Another level, and the one that holds the most prestige, is the Full Scale Gold (FSG) arowana fish. Indeed, it does, with scales which may or may not give off a purplish sheen. Unlike the RTG arowanas, FSG arowanas have yellow-brown to solid gold pectoral and ventral fins. An enthusiast with an eye for an arowana fish might notice the difference, but a beginner couldn't tell an FSG from a High Back RTG. Also, two-thirds down the pectoral and ventral fins, the supposedly yellow-brown or golden coloration turns coppery, sometimes dark red. A fully-grown adult arowana fish has a formidable countenance often cloaked in bright colors, but it does not mean it began like that as well. In fact, they are so helpless that for the first five to six weeks, they have with them an egg sac, which provides them with food and nutrition. When they are old enough to lose their sacs, which is when the territoriality and aggressiveness kicks in while they look for themselves bugs and small aquatic animals to feed upon. In fact, it is very noticeable that it grows and does not seem to stop. Indeed, if one keeps on taking good care of the arowana, it will continue growing, given that there is enough room, food, and patience. In mating, the two fishes will swim in pair and find a spot to make a nest, usually from mud. It might be noted a fully grown arowana can reach close to 3 feet in length and 6 inches in height and needs at least a 100 gal tank. They love gold fish as a main food source which can get a little expensive.
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