Common name: Water Plantain Order

Alismatales is an order of flowering plants that includes several aquatic and marsh species. In the reefkeeping hobby, this order is represented by seagrasses, which are valued for their natural beauty and ability to stabilize substrates. Seagrasses from this order, such as those in the genus Halophila, are important for nutrient cycling and can provide habitat for small invertebrates and juvenile fish. They require moderate lighting, a substrate rich in nutrients, and good water flow to thrive in an aquarium setting.

1. 
   Common name: Fine sea grass

   Scientific name: Halodule uninervis
2. Common name: Shoal Grass

   Scientific name: Halodule wrightii
3. 
   Common name: seagrass

   Scientific name: Halophila ovalis
4. Common name: Species code: hn

   Scientific name: Halophila spinulosa
5. 
   Common name: manatee grass

   Scientific name: Syringodium filiforme
6. 
   Common name: Turtle Grass

   Scientific name: Thalassia testudinum
7. 
   Common name: common eel-grass

   Scientific name: Zostera marina
8. 
   Common name: dwarf eelgrass

   Scientific name: Zostera noltii