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Effect of Background Color on the Growth Pattern and Coloration of Guppy (poecilia Reticulata)

ADITI BARUA
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

SAIFUDDIN RANA
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

FARHANA ISLAM SHAWON
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

MASUMA KHANOM MUNTAHA,
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

SK. ISTIAQUE AHMED
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

SHAHIDA ARFINE SHIMUL
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

SK. AHMAD AL NAHID
Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

Abstract/ Executive Summary:

A study was carried out to investigate the effects of background color on the growth, skin pigmentation and breeding performances of guppy, Poecilia reticulata. Guppy fish was reared in tanks with four different colors as treatments such as T₀ (transparent), T₁ (red), T₃ (blue) and T₄ (green) for 5 months. There were significant differences in growth and coloration among the treatments. The growth performance was found significantly higher in the transparent background compared to the other treatments. The results showed that the highest mean weight (0.259 ±0.018 g), mean length (3.067±0.208 cm) and SGR (0.165±0.012) of the fish were significantly higher in T₀. The least mean weight (0.167± 0.025 g), mean length (2.53±.0.058 cm) and SGR (0.104±0.017) were observed in T₁ indicating association of red color with slower growth performance of guppy, compared to other treatments. The study showed a significant influence of background color in skin pigmentation. Fishes reared in transparent tanks showed the highest value of carotenoid (0.00175±0.00004mg/g) and fishes reared in the red tank showed the lowest value of carotenoid (0.00092±0.000035 mg/g). Green background enhanced red-orange color on fish skin and provided a high amount of carotenoid value (0.00143±0.000046 mg/g) than that with blue (0.00095±0.000025 mg/g). These results suggest a significant influence of background color on the growth and skin pigmentation patterns of Guppy.

Keywords: Poecilia reticulata, Growth performance, Carotenoid, Guppy fish.

Location: Department of Fisheries Resource Management, Chattogram Veterinary and Animal Sciences University, Khulshi 4225, Chattogram, Bangladesh

Start Date:

End Date:

Program Area: Animal Health and Management

Commodity: Fish

Objectives:

To investigate the influence of different background colors on growth performance and coloration of guppy fish.

Methodology:

About eighty guppy fry were kept for three days in several rectangular aquaria without any background color (transparent glass) to acclimatize to the treatment conditions. Twelve (12) glass aquaria (9.3inch × 7inch × 11inch) with 8L of water holding capacity were taken. Among the 12 tanks, three different colors (red, blue and green) were used in triplicate and three rectangular glass aquaria were kept transparent to provide no background color. Seventy-two fry had been distributed into the tanks (six fish per aquarium). The fish in each treatment were fed two times daily at a ratio size of approximately 5% body weight. Water in each tank was changed at a rate of 30% volume per day by treated tap water. The water quality parameters including temperature, dissolved oxygen and pH were kept in a suitable range for the experimental fish during the experiment. A sampling of the experimental fish was done at a regular interval of two weeks. The weight of fish was taken by using a digital weight machine and the length of fish was taken by using measuring scales. Data were collected and recorded for the determination different of the parameters of growth performance. Mean weight and length were calculated and recorded for the determination of the growth performance. Moreover, SGR and survival rate were also measured to analyze the overall effects of background color on growth. The total carotenoid content of the fish body was estimated by using the method of Torrissen and Naevdal (1984). Statistical analyses were performed by using Microsoft Office Excel (Version-2016) and IBM SPSS (Version-25). Values were expressed as means the standard deviation (SD). Data were analyzed by one-way analysis of variance (ANOVA) and statistical significance was set at p< 0.05.

Source of Information: Bangladesh J. Fish. (2021) 33(1) : 13-20

Article Link (Online Journal): https://doi.org/10.52168/bjf.2021.33.02

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The color of the tanks affects the growth performance and skin pigmentation of fish hence it is advisable to consider the tank colors when setting up an aquaculture facility. In addition, coloration is the most considerable factor to count in ornamental fish culture. Particularly, this study revealed that the growth performance and coloration of guppy fish were significantly improved by rearing the fish in transparent background.

Knowledge Management: Journal