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.
* For the safety of our animals, we now ship live fish exclusively via UPS Next Day Air. If your order contains this item, you will only see UPS Next Day Air as a shipping option during checkout *. Scarlet Badis are, in our humble opinion, one of the most underrated fish species of the aquarium hobby. Also known as Dario dario or Scarlet Gem Badis, these small fish are simply gorgeous. The males are mostly a ruby red in color with luminescent light blue stripes, and their large fins are similarly red with blue streaks and white-blue trim.