Causes of keratitis include: 1  Injury. 2  If an object scratches the surface of one of your corneas or penetrates a cornea, keratitis without an infection may result. 3  In addition, an injury may allow bacteria or fungi to gain access to the cornea through the damaged surface, causing infectious keratitis.
There are 5 species of stonefish that can be found in the coastal regions of Indian and Pacific oceans. Some species of stonefish live in the rivers. Stonefish lives close to coral reefs and underwater rocks. It often lies buried in the sand in the shallow water.
Saltwater Angelfish: Habitat. Across their range, saltwater angelfish tend to live in very specific habitats. They live almost exclusively on coral reefs. Most species live in shallow water, less than 20 meters deep. Saltwater angelfish rarely live below 50 meters.Many species of angelfish have diets specialized to this type of habitat, as most eat coral, algae and invertebrates common on tropical coral reefs. Their range and habitat overlaps with butterflyfish, which are often confused with angelfish.altwater angelfish rarely live below 50 meters. Many species of angelfish have diets specialized to this type of habitat, as most eat coral, algae and invertebrates common on tropical coral reefs.