| Zanclus |
the Moorish idols, Family Zanclidae, marine fish related
to acanthurids and often imported from Hawaii; extremely difficult
to maintain in a home aquarium |
| |
|
| Zebrasoma |
acanthurids with elongate snouts suitable for picking filamentous
algae from rocks; the genus includes many marine aquarium species,
such as the yellow tang, Z flavescens |
| |
|
| Zoanthid |
any of the sea mats of the anthozoan Order Zoantharia, colonial
polyps up to several inches in height, usually interconnected at the
base by a sheet of tissue and lacking a skeleton; often exhibited
in minireef aquariums |
| |
|
| Zoanthus |
the genus of zoanthids most commonly seen in the aquarium trade |
| |
|
| Zonation |
patterns of colonization of a habit by living organisms, depending
upon specific conditions, such as the degree of exposure at low tide
or altitude |
| |
|
| Zoochlorellae |
green algae living in mutualistic symbiosis with certain invertebrates,
ranging from the freshwater Hydra to marine organisms such as tunicates
and sponges |
| |
|
| Zoogeography |
the study of the spatial distribution of species |
| |
|
| Zooplankton |
nonphotosynthetic organisms suspended or swimming in the water column,
often feeding on phytoplankton and, in turn, providing food for a
variety of larger organisms |
| |
|
| Zooxanthellae |
dinoflagellates living in mutualistic symbiosis with certain invertebrates,
including many species of cnidarians and mollusks kept in minireef
aquariums; they are of critical importence in the physiology of reef-building
stony corals |
