The use of sunscreen is highly recommended to protect the health of the skin from ultraviolet radiation. Most commercial sunscreens contain artificial preservatives such as methylparaben, which can be detrimental to health. Preservatives in sunscreen can be substituted with natural ingredients, in which Sargassum polycystum ethanol extract is offered as an alternative in this research. The preservative is made from S. polycystum extract with addition of seaweed porridge of 1:1 S. polycystum and Eecheuma cottoni mixture. The quality of cream is tested using total microbial test, durable power prediction, antioxidant and SPF value. Its physical stability is tested through sensory testing, pH measurement, cyling test and centrifugal test. Butylated hydroxytoluene (BHT) is used as control and is then treated with methylparaben and the extract for comparison, the extract was found to have comparable microbial results with 8 weeks of preservation compared to methylparaben (9 weeks). In addition, the cream shows stability up to one year, a balanced pH according to SNI, shows no foul odor, antioxidant activity (IC50 ) of 105.42, SPF value of 2.00, and moderate to favorable consumer acceptance.

Discus is one of the ornamental fish that lives in freshwater. Discus is a fish that is quite famous among ornamental fish lovers. Discus (Symphysodon discus) belongs to the Cichlidae family which comes from the calm waters of the Amazon river. This fish is also known as the King of Aquarium. Its body shape is round like a disc and its movements are smooth. Discus enthusiasts are numerous, and they are also creative to bring up new varieties that are better and more attractive, which are in demand by the public. All strains of discus fish are in demand by both local and export communities. At Mischosella Fish Cipayung Farm, 3 types of discus are cultivated, namely Pigeon, Turquois, and Malboro. These three types of discus have distinctive patterns and colors. The productivity of these three types of discus greatly influences the company's productivity in producing discus seeds. The purpose of this study was to determine the productivity of the Pigeon, Turquois, and Malboro discus at the Mischosella Fish Cipayung Farm and at the same time provide suggestions for the types of discus broodstock that need to be developed. The parameters observed in this study were brood spawning frequency, fecundity, hatching rate, and survival rate of discus larvae. Based on the results of the study, the spawning frequency was carried out by the Turquise species (9 times during the observation) while producing the most eggs (217 eggs). However, the highest hatching rate was produced by the Marlboro discus parent (96.26%). However, the highest survival rate was found in discus larvae produced by Turquise breeders (84.4%), and the highest ABL values were found in Marlboro and Pigeon. Water quality during larval rearing in the media for raising discus larvae for Pigeon, Turquise, and Marlboro types is in the same range, namely temperature 26 – 30.5oC, pH 6 – 6.8 and DO 5.5 – 6.3 mg/l. the optimum range for breeding discus seeds.

Vannamei is a superior commodity of aquaculture in Indonesia. However, production of vannamei only reached 91.5% of the 450.000 tons revised target. Several factors are the cause of the target not being achieved. One of which is a disease outbreak. The use of probiotics as an application that improves the health status of shrimp is a better choice than the use of antibiotics for treatment. The effectiveness of the application of probiotics to control pathogenic microorganisms is highly influenced by the type of bacteria used. This research was conducted to examine the efficacy of using two different types of probiotics with different bacteria compositions on the productivity of vannamei shrimp. The 2.200 m2 pond plots shielded with low-density polyethene (LDPE) were used. The stocking density was 250 fry.m-2. The vannamei shrimp were fed with an artificial diet containing protein from 30-40%, fat form 5%, fibre form 4%, and water content form 11% during rearing. In preparation and maintenance of water management, probiotics A and B. were applied. The results showed that the use of type B probiotics reached better productivity than type A.