January 11, 2011. 1  According to Education Next, teachers retire, on average, at around the age of 58. AARP reports that 33 percent of all beginning teachers leave the teaching profession within three years of beginning their careers, but the majority of teachers continue teaching and can reap retirement benefits later in life.
Deep-sea anglerfish, hatchetfish, and lantern fish are among the best-known luminescent fishes. In most such fishes, luminescence is produced intracellularly; the light is emitted by special cells called photocytes. The anatomical structure of the luminous organs of many fishes is similar to that of squids.
Diet: Omnivore. GloFishÂ® Galactic Purple Tetras are beautiful freshwater Tetra fish that glow under black lights. Unlike other GloFishÂ® fluorescent fish, which are Zebra Danios, the Galactic Purple Tetra is a variation of the White Skirt Tetra. The Galactic Purple are created with selective breeding of the White Skirt Tetra, using a certain gene in the fish to produce the purple color. GloFishÂ® Galactic Purple Tetras are not injected or dyed.