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Some of the endangered species include hand fern, giant air plant, celestial lily, Curtiss' <br />milkweed, rosemary and calopogon. Threatened species include hooded pitcher plants, <br />orchids, ferns, sundew and Catesby's lily. <br />Over 100 species of fish can be found in the St. Sebastian River. These include marine <br />species like mullet, spot, lady fish, tarpon, and five species of snook, which can be found <br />as far upstream as the C.R. 512 bridge. Four species of tropical marine fish occurring in <br />the St. Sebastian River are considered rare in Florida waters (the so-called "tropical <br />peripheral species"). These are the opossum pipefish, river goby, slashcheek goby, and <br />the bigmouth sleeper. Of these fishes, the opossum pipefish, Microphis brachyurus <br />lineatus, is listed as a "candidate" or "species of concern" by the National Marine <br />Fisheries Service (NOAA). This assemblage of tropical peripheral species only occurs in <br />three rivers in North America: the St. Sebastian, St. Lucie, and the Loxahatchee. <br />Fish survival in the St. Sebastian River during sensitive life history stages is directly <br />associated with various types of common, yet important, wetland vegetation (cypress, <br />mangroves, cordgrass), submerged aquatic vegetation (seagrass and algae), and emergent <br />herbaceous vegetation (smartweeds and panic grasses). These plant -fish associations are <br />critical for the survival of these very localized populations of tropical fish species found <br />in the St. Sebastian River. <br />St. Sebastian River Greenway Plan 7 <br />