Glossary

182 terms beginning with P · showing 121–160

1. postdorsal

   Located posterior to the dorsal fin.

   Used in 23 profiles

2. postdorsal length

   The distance between the dorsal fin insertion/origin and caudal fin base.

   Used in 2 profiles

3. posterior

   Located near or towards the rear end; further back in position.

   Used in 396 profiles

4. postocular

   Located behind the eye.

5. postoral pouch

   A transverse, hollow, pouch-like structure opening anteriorly and located on the ventral surface, immediately posterior to the mouth, in some members of certain balitorid genera, e.g., Gastromyzon, Neogastromyzon.

   Used in 13 profiles

6. postorbital

   Behind the eye.

   Used in 27 profiles

7. potamodromous

   Migratory within freshwaters such as rivers or streams.

8. powerhead

   Type of submersible water pump normally used to create additional water flow in an aquarium. One or more may be installed depending on requirements.

   Used in 274 profiles

9. praziquantel

   Antihelmintic medication used to treat parasitic flatworm infestations.

10. pre-

    Anterior; in front of.

11. preanal

    Area or region anterior to the anus.

    Used in 3 profiles

12. preanal length

    Distance between the tip of the upper jaw to the anus.

    Used in 7 profiles

13. precaudal

    In front of the caudal fin or posterior end of the body.

    Used in 13 profiles

14. predator

    An organism capturing and consuming other organisms.

    Used in 221 profiles

15. predatory

    Preying on other organisms.

    Used in 173 profiles

16. predorsal

    Area or region anterior to the first dorsal fin.

    Used in 75 profiles

17. predorsal length

    Distance between the tip of the upper jaw and inseryion/origin of first dorsal fin..

    Used in 19 profiles

18. predorsal scale

    Any of the scales lying on the dorsal midline between the back of the skull and insertion/origin of the dorsal fin.

    Used in 101 profiles

19. prefilter

    A preliminary filter or filter stage, most often used to trap solid particles via mechanical filtration prior to a biological or chemical stage.

20. prehensile

    Able to grasp or hold.

21. premaxilla

    Either of the paired, dermal bones located in front of and between the maxillary bones in the upper jaw. Often bear teeth.

    Used in 49 profiles

22. premaxillae

    Plural of premaxilla.

    Used in 1 profile

23. premaxillary

    Of or relating to either or both premaxillae.

    Used in 59 profiles

24. premaxillary tooth

    Tooth located on either premaxilla.

    Used in 3 profiles

25. preocular

    Anterior or in front of the eye.

26. preopercle

    Bone forming the posterior and lower margins of the cheek; the anteriormost bone of the opercle. Also known as the preoperculum.

    Used in 62 profiles

27. preopercular

    Relating to, of, or located on the preopercle.

    Used in 40 profiles

28. preoperculum

    See preopercle.

29. preorbital

    Bone forming the lower, anterior section of the eye socket and normally the largest of the suborbital bones. Also known as the lacrimal or lachrymal bone.

    Used in 12 profiles

30. preterminal

    Located slightly before the end or tip of something.

31. principle caudal-fin rays

    Fin rays forming the dorsal or ventral margins of the caudal fin, supported by the supported by the hypural and parahypural.

    Used in 1 profile

32. process

    Natural outgrowth or projection of an organism or organic structure.

    Used in 334 profiles

33. processus dentiformis

    Tooth-like projection in the middle of the upper jaw in certain loach genera which may fit into a notch in the lower jaw. Also referred to as dentiform process.

    Used in 16 profiles

34. procumbent

    Of a plant, having stems that trail along the ground but do not root.

    Used in 7 profiles

35. procurrent

    Of fin rays, inclined forwards or placed progressively farther forwards.

    Used in 1 profile

36. progenesis

    Form of paedomorphism characterised by retention of juvenile features in an adult individual via accelerated maturation.

37. progenetic

    Undergoing accelerated sexual maturation, often with associated retention of juvenile features in adults.

    Used in 16 profiles

38. prokaryote

    Normally unicellular organisms possessing cells without a membrane-bound nucleus.

39. prokaryotic

    Possessing cells without membrane-bound nuclei. Typical in bacteria and cyanobacteria.

40. promiscuity

    The state or character of being promiscuous.