Diatoms, classified as photosynthesizing algae with siliceous skeleton frustules, can be found most in any aquatic habitat on earth, including fresh or coastal lakes, wetlands and almost everywhere humid. They can be classified in nine major classes which are Araphid, Eunotioid, Centric, Epithemioid, Monoraphid, Nitzschioid, Surirelloid, Asymmetrical Biraphid and Symmetrical Biraphid. Diatoms have precise ecological requirements, so they can also be sued as environmental indicators, it is telling us what is happening in the environment. The cell walls of diatoms may be preserved for long periods of time in sediments and provide a record of past changes in lake systems. This research aim is to identify the morphology of diatoms in lakes and reservoirs in USIM. The samples were collected by taking 250 ml of water from each lakes and reservoirs. Then, two drops of water sample were put on a cover slip and two drops of iodine were added. The samples were then observed under microscope and diatoms were identified by analyzing the types of morphology. Diatoms of symmetrical morphology were found in major lakes and reservoirs in USIM. The search for diatoms of other morphologies are still in progress. The morphology of diatoms can help us to know the water condition whether it is polluted or not. Therefore, this research is vital in environmental science as to provide information and support in the investigation to know the water condition.

A species complex exists in all groups of organisms where two or more organisms that are closely related have similar appearance and are not completely differentiated between one another because of the lack of evidence and data. The latest discovery of a new species of tree frogs, Polypedates discantus in Thailand proves that further research is needed to uncover and unveil certain species complex under Polypedates leucomystax. This would ultimately avoid local and global species diversity from being underestimated. The aim of this study was to determine whether Polypedates discantus of peninsular Malaysia can be separated from Polypedates leucomystax of Malay Clade by using morphometric analysis. Samples of adults Polypedates leucomystax were collected from several locations in peninsular Malaysia particularly Perak, Kelantan and Pahang. The samples were then preserved in 70% ethanol solution and its morphological measurements were measured using a vernier caliper. Data collected is analyzed using PAST analysis software version 3.25 where it undergoes data confirmation, multivariate analysis and species conformation according to the discriminant function analysis chart given. The expected results of this finding will produce different clusters between the two species population of Perak, Kelantan and Pahang. Thus drawing a dividing line between the two species which will have a huge impact on conservation biology.